Quantum DetectionThe Quantum Detection group at NPL use a broad range of technology, much of it at the nanometre scale, to explore physical phenomenon for electrical metrology, magnetic sensing and communications.
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2013
Slow noise processes in superconducting resonators
J. Burnett, T. Lindström, M. Oxborrow, Y. Harada, Y. Sekine, P. Meeson and A. Ya. Tzalenchuk
Physical Review B, 87, 140501(R) (2013)
doi: 10.1103/PhysRevB.87.140501 (5 pages)
Epitaxial Graphene Sensors for Detection of Small Magnetic Moments
V. Panchal, D. Cox, R. Yakimova, and O. Kazakova
IEEE T. Magn., 49, 97-100 (2013)
Weak localization scattering lengths in epitaxial, and CVD graphene
A. M. R. Baker, J. A. Alexander-Webber, T. Altebaeumer, T. J. B. M. Janssen, A. Tzalenchuk, S. Lara-Avila, S. Kubatkin, R. Yakimova, C. T. Lin, L. J. Li, and R. J. Nicholas
Physical Review B, 86, 235441 (2012)
Spatially resolved electrical characterization of graphene layers by an evanescent field microwave microscope
Andrew Gregory, Ling Hao, Norbert Klein, John Gallop, Cecilia Mattevi, Olena Shaforost, Kevin Lees and Bob Clarke
In press, Physica E, http://dx.doi.org/10.1016/j.physe.2012.10.006 (2012)
Fabrication and Characterization of Carbon Nanotubes as r.f. Interconnects
L. Hao, D. Cox, K. Lees, J. C. Gallop, P. See, R. Clarke, T. J. B. M. Janssen, R. F. Zhang and F. Wei
Nanotechnology (IEEE-Nano), doi:10.1109/NANO.2012.6322012 (2012)
Surface Potential Variations in Epitaxial Graphene Devices Investigated by Electrostatic Force Spectroscopy
V. Panchal, T. L. Burnett, R. Pearce, K. Cedergren, R. Yakimova, A. Tzalenchuk and O. Kazakova
Nanotechnology (IEEE-Nano), doi:10.1109/NANO.2012.6322049 (2012)
Near-field Microwave Excitation and Detection of NEMS Resonators
L. Hao, J. Gallop and J. Chen
Nanotechnology (IEEE-Nano), doi:10.1109/NANO.2012.6321922 (2012)
Ferromagnetism in nanomesh graphene
G. Q. Ning, C. G. Xu, L. Hao, O. Kazakova, Z. J. Fan, H. Wang, K. X. Wang, J. S. Gao, W. Z. Qian and F. Wei
Carbon, 51, 390-396 (2013)
Stabilization of single-electron pumps by high magnetic fields
J. D. Fletcher, M. Kataoka, S. P. Giblin, Sunghun Park, H.-S. Sim, P. See, D. A. Ritchie, J. P. Griffiths, G. A. C. Jones, H. E. Beere and T. J. B. M. Janssen
Phys. Rev. B, 86, 155311 (2012)
Application of a Josephson quantum voltage source to the measurement of microsecond timescale settling time on the Agilent 3458A 8.5 digit voltmeter
D. Henderson, J. M. Williams and T. Yamada
Meas. Sci. Technol. 23, 124006 (2012)
Identification of epitaxial graphene domains and adsorbed species in ambient conditions using quantified topography measurements
T. L. Burnett, R. Yakimova and O. Kazakova
J. Appl. Phys., 112, 054308 (2012)
A low noise preamplifier with optoelectronic overload protection for radioactivity measurement
J. P. Sephton, J. M. Williams, L. C. Johansson and H. C. Philips
Appl. Radiat. Isot., 70, 2047-2050 (2012)
Towards a quantum representation of the ampere using single electron pumps
S.P. Giblin, M. Kataoka, J.D. Fletcher, P. See, T.J.B.M. Janssen, J.P. Griffiths, G.A.C. Jones, I. Farrer and D.A. Ritchie
Nature Communications 3, 930 (2012)
A monolithic array of three-dimensional ion traps fabricated with conventional semiconductor technology
Guido Wilpers, Patrick See, Patrick Gill and Alastair G. Sinclair
Nature Nanotechnology (2012)
Room-temperature solid-state maser
Mark Oxborrow, Jonathan D. Breeze and Neil M. Alford
Nature 488, 353-356 (2012)
Microwave surface impedance measurements on reduced graphene oxide
L. Hao, C. Mattevi, J. Gallop, S. Goniszewski, Y. Xiao, L. Cohen, and N. Klein
Nanotechnology, 23, 285706 (2012)
Precision comparison of the quantum Hall effect in graphene and gallium arsenide
T. J. B. M. Janssen, J. M. Williams, N. E. Fletcher, R. Goebel, A. Tzalenchuk, R. Yakimova, S. Lara-Avila, S. Kubatkin, and V. I. Fal'ko
Metrologia, 49, 294-306 (2012)
Modelling and optimization of submicron Hall sensors for the detection of superparamagnetic beads
A. Manzin, V. Nabaei, and O. Kazakova
J. Appl. Phys., 111, 07E513 (2012)
Small epitaxial graphene devices for magnetosensing applications
V. Panchal, K. Cedergren, R. Yakimova, A. Tzalenchuk, S. Kubatkin, and O. Kazakova
J. Appl. Phys., 111 (2012)
Synthesis of linear ZnO structures by a thermal decomposition method and their characterisation
K. K. Devarepally, D. C. Cox, A. T. Fry, V. Stolojan, R. J. Curry, and M. Munz
J. Mater. Sci., 47, 1893-1901 (2012)
Microwave excitation and readout of nano- and micron scale cantilevers
L. Hao, S. Goniszewski, J. Chen, and J. Gallop
Appl. Surf. Sci., 258, 2192-2195 (2012)
Synthesis and Magnetic Characterization of Coaxial Ge(1-x)Mn(x)/a-Si Heterostructures
S. Barth, O. Kazakova, S. Estrade, R. G. Hobbs, F. Peiro, M. A. Morris, and J. D. Holmes
Cryst. Growth Des., 11, 5253-5259 (2011)
Cryogenic current comparators and their application to electrical metrology
J. M. Williams
IET SCIENCE MEASUREMENT & TECHNOLOGY, 5, 211-224 (2011)
Disordered Fermi Liquid in Epitaxial Graphene from Quantum Transport Measurements
S. Lara-Avila, A. Tzalenchuk, S. Kubatkin, R. Yakimova, T. J. B. M. Janssen, K. Cedergren, T. Bergsten, and V. Fal'ko
Phys. Rev. Lett., 107, 166602 (2011)
Low optical power reference detector implemented in the validation of two independent techniques for calibrating photon-counting detectors.
J. Y. Cheung, C. J. Chunnilall, G. Porrovecchio, M. Smid, and E. Theocharous
Opt. Express, 19, 20347-20363 (2011)
Pound-locking for characterization of superconducting microresonators
T. Lindstroem, J. Burnett, M. Oxborrow, and A. Y. Tzalenchuk
Rev. Sci. Instrum., 82, 104706 (2011)
On-demand single-electron transfer between distant quantum dots
R. P. G. McNeil, M. Kataoka, C. J. B. Ford, C. H. W. Barnes, D. Anderson, G. A. C. Jones, I. Farrer, and D. A. Ritchie
Nature, 477, 439-442 (2011)
Graphene, universality of the quantum Hall effect and redefinition of the SI system
T. J. B. M. Janssen, N. E. Fletcher, R. Goebel, J. M. Williams, A. Tzalenchuk, R. Yakimova, S. Kubatkin, S. Lara-Avila, and V. I. Falko
NEW JOURNAL OF PHYSICS, 13, 093026 (2011)
Detection and susceptibility measurements of a single Dynal bead
L. Di Michele, C. Shelly, P. de Marco, P. See, D. Cox, and O. Kazakova
J. Appl. Phys., 110, 063916 (2011)
Better than Bragg: Optimizing the quality factor of resonators with aperiodic dielectric reflectors
J. Breeze, M. Oxborrow, and N. M. Alford
Appl. Phys. Lett., 99, 113515 (2011)
Quantum-referenced voltage waveform synthesiser
J. M. Williams, D. Henderson, J. Pickering, R. Behr, F. Mueller, and P. Scheibenreiter
IET SCIENCE MEASUREMENT & TECHNOLOGY, 5, 163-174 (2011)
Unprecedented Long-Term Frequency Stability With a Microwave Resonator Oscillator
S. Grop, W. Schaefer, P.-Y. Bourgeois, Y. Kersale, M. Oxborrow, E. Rubiola, and V. Giordano
IEEE T. Ultrason. Ferr., 58, 1694-1697 (2011)
Engineering and metrology of epitaxial graphene
A. Tzalenchuk, S. Lara-Avila, K. Cedergren, M. Syvajarvi, R. Yakimova, O. Kazakova, T. J. B. M. Janssen, K. Moth-Poulsen, T. Bjornholm, S. Kopylov, V. Fal'ko, and S. Kubatkin
Solid State Commun., 151, 1094-1099 (2011)
Johnson-Nyquist Noise of the Quantized Hall Resistance
J. Schurr, H. Moser, K. Pierz, G. Ramm, and B. P. Kibble
IEEE T. Instrum. Meas., 60, 2280-2285 (2011)
Anomalously strong pinning of the filling factor nu=2 in epitaxial graphene
T. J. B. M. Janssen, A. Tzalenchuk, R. Yakimova, S. Kubatkin, S. Lara-Avila, S. Kopylov, and V. I. Fal'ko
PHYSICAL REVIEW B, 83, 233402 (2011)
Noise Performance of Niobium Nano-SQUIDs in Applied Magnetic Fields
E. J. Romans, S. Rozhko, L. Young, A. Blois, L. Hao, D. Cox, and J. C. Gallop
IEEE T. Appl. Supercon., 21, 404-407 (2011)
Readout System for NanoSQUID Sensors Using a SQUID Amplifier
F. Ruede, S. Bechstein, L. Hao, C. Assmann, T. Schurig, J. Gallop, O. Kazakova, J. Beyer, and D. Drung
IEEE T. Appl. Supercon., 21, 408-411 (2011)
Mapping of Local Electrical Properties in Epitaxial Graphene Using Electrostatic Force Microscopy
T. Burnett, R. Yakimova, and O. Kazakova
Nano Lett., 11, 2324-2328 (2011)
Single- and few-electron dynamic quantum dots in a perpendicular magnetic field
S. J. Wright, A. L. Thorn, M. D. Blumenthal, S. P. Giblin, M. Pepper, T. J. B. M. Janssen, M. Kataoka, J. D. Fletcher, G. A. C. Jones, C. A. Nicoll, G. Gumbs, and D. A. Ritchie
J. Appl. Phys., 109, 102422 (2011)
A metrology perspective on the dark injection transient current method for charge mobility determination in organic semiconductors
T. Esward, S. Knox, H. Jones, P. Brewer, C. Murphy, L. Wright, and J. Williams
J. Appl. Phys., 109, 093707 (2011)
Room-temperature ferromagnetism in Mn-implanted amorphous Ge
L. Ottaviano, A. Continenza, G. Profeta, G. Impellizzeri, A. Irrera, R. Gunnella, and O. Kazakova
PHYSICAL REVIEW B, 83, 134426 (2011)
Tunable Nonadiabatic Excitation in a Single-Electron Quantum Dot
M. Kataoka, J. D. Fletcher, P. See, S. P. Giblin, T. J. B. M. Janssen, J. P. Griffiths, G. A. C. Jones, I. Farrer, and D. A. Ritchie
Phys. Rev. Lett., 106, 126801 (2011)
Mapping the placement of oligonucleotide molecules using scanning probe microscopy
R. D. Boyd, L. Winkless, A. Cuenat, and O. Kazakova
COLLOIDS AND SURFACES B-BIOINTERFACES, 83, 10-15 (2011)
Detection of single magnetic nanobead with a nano-superconducting quantum interference device
L. Hao, C. Assmann, J. C. Gallop, D. Cox, F. Ruede, O. Kazakova, P. Josephs-Franks, D. Drung, and T. Schurig
Appl. Phys. Lett., 98, 092504 (2011)
Non-Volatile Photochemical Gating of an Epitaxial Graphene/Polymer Heterostructure
S. Lara-Avila, K. Moth-Poulsen, R. Yakimova, T. Bjornholm, V. Fal'ko, A. Tzalenchuk, and S. Kubatkin
ADVANCED MATERIALS, 23, 878+ (2011)
Design Concept for a Novel Squid-based Microdosemeter
S. Galer, L. Hao, J. Gallop, H. Palmans, K. Kirkby, and A. Nisbet
RADIATION PROTECTION DOSIMETRY, 143, 427-431 (2011)
Materials for superconducting nanowires for quantum phase-slip devices
J. C. Fenton, C. H. Webster and P. A. Warburton
Condensed Matter and Materials Physics Conference (cmmp10), 286, AWE; EPSRC; IOP Publishing (2011)
Quantum Detection Applications of NanoSQUIDs fabricated by Focussed Ion Beam
L. Hao 286, 012013 (2011)
Single-photon technologies
A. L. Migdall, I. P. Degiovanni, J. Y. Cheung, S. V. Polyakov, and J. Fan
J. Mod. Opt., 58, 169-173 (2011)
Outgassing of water vapour, and its significance in experiments to determine the Boltzmann constant
M. de Podesta, G. Sutton, R. Underwood, S. Bell, M. Stevens, T. Byrne, and P. Josephs-Franks
METROLOGIA, 48, L1-L6 (2011)
High-aspect ratio needle probes for combined scanning electrochemical microscopy-Atomic force microscopy
A. J. Wain, D. Cox, S. Zhou, and A. Turnbull
Electrochem. Commun., 13, 78-81 (2011)
Magnetic nanoparticle detection using nano-SQUID sensors
L. Hao, D. Cox, P. See, J. Gallop and O. Kazakova
Journal of Physics D-applied Physics, 43, 474004 (2010)
Characterization of the Linearity of Response and Spatial Uniformity of Response of Two InGaAsP/InP Geiger-Mode Avalanche Photodiodes
E. Theocharous, M. A. Itzler, J. Cheung and C. J. Chunnilall
Ieee Journal of Quantum Electronics, 46, 1561-1567 (2010)
Single particle detection: Phase control in submicron Hall sensors
L. Di Michele, C. Shelly, J. Gallop and O. Kazakova
Journal of Applied Physics, 108, 103918 (2010)
Nonlinear spin-wave phenomena in the [Mn(R/S)-pn(2)](2)[Mn(R/S)-pn(2)H2O][Cr(CN)(6)] molecular ferrimagnet
R. B. Morgunov, F. B. Mushenok and O. Kazakova
Physical Review B, 82, 134439 (2010)
Splitting and lasing of whispering gallery modes in quantum dot micropillars
B. D. Jones, M. Oxborrow, V. N. Astratov, M. Hopkinson, A. Tahraoui, M. S. Skolnick and A. M. Fox
Optics Express, 18, 22578-22592 (2010)
Charge transfer between epitaxial graphene and silicon carbide
S. Kopylov, A. Tzalenchuk, S. Kubatkin and V. I. Fal'ko
Applied Physics Letters, 97, 112109 (2010)
Wide spectral range confocal microscope based on endlessly single-mode fiber
R. Hubbard, Y. B. Ovchinnikov, J. Hayes, D. J. Richardson, Y. J. Fu, S. D. Lin, P. See and A. G. Sinclair
Optics Express, 18, 18811-18819 (2010)
An accurate high-speed single-electron quantum dot pump
S. P. Giblin, S. J. Wright, J. D. Fletcher, M. Kataoka, M. Pepper, T. J. B. M. Janssen, D. A. Ritchie, C. A. Nicoll, D. Anderson and G. A. C. Jones
New Journal of Physics, 12, 073013 (2010)
The quantum metrology triangle and the redefinition of the SI ampere and kilogram; analysis of a reduced set of observational equations
M. J. T. Milton, J. M. Williams and A. B. Forbes
Metrologia, 47, 279-286 (2010)
An automated cryogenic current comparator resistance ratio bridge for routine resistance measurements
J. M. Williams, T. J. B. M. Janssen, G. Rietveld and E. Houtzager
Metrologia, 47, 167-174 (2010)
An etalon-based method for frequency calibration of terahertz time-domain spectrometers (THz TDS)
M. Naftaly, R. A. Dudley and J. R. Fletcher
Optics Communications, 283, 1849-1853 (2010)
Ultrasmall particle detection using a submicron Hall sensor
O. Kazakova, V. Panchal, J. Gallop, P. See, D. C. Cox, M. Spasova and L. F. Cohen
Journal of Applied Physics, 107, 09E708 (2010)
Sensing individual terahertz photons
H. Hashiba, V. Antonov, L. Kulik, A. Tzalenchuk and S. Komiyama
Nanotechnology, 21, 165203 (2010)
Measurement of photon indistinguishability to a quantifiable uncertainty using a Hong-Ou-Mandel interferometer
P. J. Thomas, J. Y. Cheung, C. J. Chunnilall and M. H. Dunn
Applied Optics, 49, 2173-2182 (2010)
Observation of Periodic Orbits on Curved Two-Dimensional Geometries
M. Avlund, C. Ellegaard, M. Oxborrow, T. Guhr and N. Sondergaard
Physical Review Letters, 104, 164101 (2010)
Effect of nanostructuring of the Ge1-x Mn (x) single-crystal alloy on the percolation and cluster ferromagnetism
R. B. Morgunov, A. I. Dmitriev and O. L. Kazakova
Physics of the Solid State, 52, 748-751 (2010)
Towards a quantum resistance standard based on epitaxial graphene
A. Tzalenchuk, S. Lara-Avila, A. Kalaboukhov, S. Paolillo, M. Syvajarvi, R. Yakimova, O. Kazakova, T. J. B. M. Janssen, V. Fal'ko and S. Kubatkin
Nature Nanotechnology, 5, 186-189 (2010)
Effect of annealing on the microwave magnetoresistance of thin Ge0.96Mn0.04 films
A. I. Dmitriev, R. B. Morgunov and O. L. Kazakova
Semiconductors, 44, 303-308 (2010)
Unusual magnetism in templated NiS nanoparticles
L. Barry, J. D. Holmes, D. J. Otway, M. P. Copley, O. Kazakova and M. A. Morris
Journal of Physics-condensed Matter, 22, 076001 (2010)
ELISA: A cryocooled 10 GHz oscillator with 10(-15) frequency stability
S. Grop, P. Y. Bourgeois, N. Bazin, Y. Kersale, E. Rubiola, C. Langham, M. Oxborrow, D. Clapton, S. Walker, J. De Vicente and V. Giordano
Review of Scientific Instruments, 81, 025102 (2010)
Optical-radio-frequency resonances free from power broadening
W. Chalupczak, P. Josephs-Franks, S. Pustelny and W. Gawlik
Physical Review A, 81, 013422 (2010)
Introduction
J. Cheung, A. Migdall and M. L. Rastello
Journal of Modern Optics, 56, 139-140 (2009)
The Josephson effects (Reprinted from Contemporary Physics, vol 10, pg 139, 1969)
B. W. Petley
Contemporary Physics, 50, 71-90 (2009)
Gold nanoparticle charge trapping and relation to organic polymer memory devices
D. Prime, S. Paul and P. W. Josephs-Franks
Philosophical Transactions of the Royal Society A-mathematical Physical and Engineering Sciences, 367, 4215-4225 (2009)
Detection of a Micron-Sized Magnetic Particle Using InSb Hall Sensor
O. Kazakova, J. C. Gallop, P. See, D. Cox, G. K. Perkins, J. D. Moore and L. F. Cohen
Ieee Transactions On Magnetics, 45, 4499-4502 (2009)
Magnetic Properties of Single Crystalline Ge1-xMnx Nanowires
O. Kazakova, M. I. van der Meulen, N. Petkov and J. D. Holmes
Ieee Transactions On Magnetics, 45, 4085-4088 (2009)
Providing reference standards and metrology for the few photon-photon counting community
A. R. Beaumont, J. Y. Cheung, C. J. Chunnilall, J. Ireland and M. G. White
Nuclear Instruments & Methods In Physics Research Section A-accelerators Spectrometers Detectors and Associated Equipment, 610, 183-187 (2009)
Properties of superconducting planar resonators at millikelvin temperatures
T. Lindstrom, J. E. Healey, M. S. Colclough, C. M. Muirhead and A. Y. Tzalenchuk
Physical Review B, 80, 132501 (2009)
Excitation, detection, and passive cooling of a micromechanical cantilever using near-field of a microwave resonator
L. Hao, J. C. Gallop and D. Cox
Applied Physics Letters, 95, 113501 (2009)
The route to single magnetic particle detection: a carbon nanotube decorated with a finite number of nanocubes
I. Rod, O. Kazakova, D. C. Cox, M. Spasova and M. Farle
Nanotechnology, 20, 335301 (2009)
Electron spin resonance in oriented nanowires Ge0.99Cr0.01
R. B. Morgunov, F. B. Mushenok, A. I. Dmitriev, O. L. Kazakova and Y. Tanimoto
Physics of the Solid State, 51, 1709-1715 (2009)
Percolation ferromagnetism and spin waves in Ge:Mn thin films
R. B. Morgunov, A. I. Dmitriev and O. L. Kazakova
Physical Review B, 80, 085205 (2009)
Spin-orbit interaction of charge carriers with impurities in aligned Ge0.99Me0.01 (Me = Mn, Cr, Co, Fe) nanowires
R. B. Morgunov, A. I. Dmitriev, F. B. Mushenok and O. L. Kazakova
Semiconductors, 43, 896-900 (2009)
Frequency calibration of terahertz time-domain spectrometers
M. Naftaly, R. A. Dudley, J. R. Fletcher, F. Bernard, C. Thomson and Z. Tian
Journal of the Optical Society of America B-optical Physics, 26, 1357-1362 (2009)
An SI traceable electrometer system for radionuclide metrology
S. P. Giblin, E. Bakshandier, N. E. Fletcher, K. J. Lines and J. P. Sephton
Nuclear Instruments & Methods In Physics Research Section A-accelerators Spectrometers Detectors and Associated Equipment, 606, 824-828 (2009)
Characteristics of focused ion beam nanoscale Josephson devices
L. Hao, D. C. Cox and J. C. Gallop
Superconductor Science & Technology, 22, 064011 (2009)
Fundamental metrology in the future: Measuring the single quantum
J. Gallop
European Physical Journal-special Topics, 172, 399-408 (2009)
Focused Ion Beam NanoSQUIDs as Novel NEMS Resonator Readouts
L. Hao, J. C. Gallop, D. Cox, E. J. Romans, J. C. Macfarlane and J. Chen
Ieee Transactions On Applied Superconductivity, 19, 693-696 (2009)
Spin-wave resonance in Ge1-x Mn (x) films exhibiting percolation ferromagnetism
A. I. Dmitriev, R. B. Morgunov, O. L. Kazakova and Y. Tanimoto
Journal of Experimental and Theoretical Physics, 108, 985-991 (2009)
Electron spin resonance of charge carriers and antiferromagnetic clusters in Ge0.99Cr0.01 nanowires
R. B. Morgunov, A. I. Dmitriev, Y. Tanimoto and O. Kazakova
Journal of Applied Physics, 105, 093922 (2009)
The Hong-Ou-Mandel interferometer: A new procedure for alignment
P. J. Thomas, J. Y. Cheung, C. J. Chunnilall and M. H. Dunn
Review of Scientific Instruments, 80, 036101 (2009)
Design and metrological applications of a low noise, high electrical isolation measurement unit
J. M. Williams, D. R. Smith, D. Georgakopoulos, P. D. Patel and J. R. Pickering
Iet Science Measurement & Technology, 3, 165-174 (2009)
Single Crystalline Ge1.xMnx Nanowires as Building Blocks for Nanoelectronics
M. I. van der Meulen, N. Petkov, M. A. Morris, O. Kazakova, X. H. Han, K. L. Wang, A. P. Jacob and J. D. Holmes
Nano Letters, 9, 50-56 (2009)
Enhanced current quantization in high-frequency electron pumps in a perpendicular magnetic field
S. J. Wright, M. D. Blumenthal, G. Gumbs, A. L. Thorn, M. Pepper, T. J. B. M. Janssen, S. N. Holmes, D. Anderson, G. A. C. Jones, C. A. Nicoll and D. A. Ritchie
Physical Review B, 78, 233311 (2008)
Optimization of 2DEG InAs/GaSb Hall Sensors for Single Particle Detection
O. Kazakova, J. C. Gallop, D. C. Cox, E. Brown, A. Cuenat and K. Suzuki
Ieee Transactions On Magnetics, 44, 4480-4483 (2008)
Electrical properties of nanometre thin film polystyrene for organic electronic applications
D. Prime, S. Paul and P. W. Josephs-Franks
Ieee Transactions On Dielectrics and Electrical Insulation, 15, 905-909 (2008)
Point contact readout for a quantum dot terahertz sensor
S. Pelling, R. Davis, L. Kulik, A. Tzalenchuk, S. Kubatkin, T. Ueda, S. Komiyama and V. N. Antonov
Applied Physics Letters, 93, 073501 (2008)
Noise temperature and linewidth of high-temperature-superconducting heterodyne gigahertz oscillators
J. Du, J. C. Macfarlane and L. Hao
Applied Physics Letters, 93, 033507 (2008)
Magnetic field tuning of coplanar waveguide resonators
J. E. Healey, T. Lindstrom, M. S. Colclough, C. M. Muirhead and A. Y. Tzalenchuk
Applied Physics Letters, 93, 043513 (2008)
Electron spin resonance and microwave magnetoresistance in Ge : Mn thin films
R. Morgunov, M. Farle, M. Passacantando, L. Ottaviano and O. Kazakova
Physical Review B, 78, 045206 (2008)
Microwave magnetoresistance and electron spin resonance in Ge : Mn thin films and nanowires
R. B. Morgunov, M. Farle and O. L. Kazakova
Journal of Experimental and Theoretical Physics, 107, 113-125 (2008)
Spin dynamics in oriented ferromagnetic nanowires Ge0.99Co0.01
R. B. Morgunov, A. I. Dmitriev, Y. Tanimoto, J. S. Kulkarni, J. D. Holmes and O. L. Kazakova
Physics of the Solid State, 50, 1103-1109 (2008)
Nano-scale shear mode testing of the adhesion of nanoparticles to a surface-support
M. Munz, D. C. Cox and P. J. Cumpson
Physica Status Solidi A-applications and Materials Science, 205, 1424-1428 (2008)
Effect of magnetic defects and dimensionality on the spin dynamics of GeMn systems: Electron spin resonance measurements
O. Kazakova, R. Morgunov, J. Kulkarni, J. Holmes and L. Ottaviano
Physical Review B, 77, 235317 (2008)
Microwave magnetoresistance in Ge : Mn nanowires and nanofilms
R. Morgunov, Y. Tanimoto and O. Kazakova
Science and Technology of Advanced Materials, 9, 024207 (2008)
A low-noise current-sensitive amplifier-discriminator system for beta particle counting
J. P. Sephton, L. C. Johansson and J. M. Williams
Applied Radiation and Isotopes, 66, 890-894 (2008)
Measurement and noise performance of nano-superconducting-quantum-interference devices fabricated by focused ion beam
L. Hao, J. C. Macfarlane, J. C. Gallop, D. Cox, J. Beyer, D. Drung and T. Schurig
Applied Physics Letters, 92, 192507 (2008)
Spin solitons and spin waves in chiral and racemic molecular based ferrimagnets
R. Morgunov, M. V. Kirman, K. Inoue, Y. Tanimoto, J. Kishine, A. S. Ovchinnikov and O. Kazakova
Physical Review B, 77, 184419 (2008)
Single-parameter nonadiabatic quantized charge pumping
B. Kaestner, V. Kashcheyevs, S. Amakawa, M. D. Blumenthal, L. Li, T. J. B. M. Janssen, G. Hein, K. Pierz, T. Weimann, U. Siegner and H. W. Schumacher
Physical Review B, 77, 153301 (2008)
Single electron pumping at higher frequency in a novel semiconductor-based quantum dot device
L. Li, B. Kaestner, M. D. Blumenthal, S. Giblin, T. J. B. M. Janssen, M. Pepper, D. Anderson, G. Jones, D. A. Ritchie and J. Gao
Acta Physica Sinica, 57, 1878-1885 (2008)
Static envelope patterns in composite resonances generated by level crossing in optical toroidal microcavities
T. Carmon, H. G. L. Schwefel, L. Yang, M. Oxborrow, A. D. Stone and K. J. Vahala
Physical Review Letters, 100, 103905 (2008)
Thermal-noise-limited optical cavity
S. A. Webster, M. Oxborrow, S. Pugla, J. Millo and P. Gill
Physical Review A, 77, 033847 (2008)
Electron pumping through quantum dots defined in parallel etched quantum wires
M. D. Blumenthal, B. Kaestner, L. Li, S. Giblin, T. J. B. M. Janssen, M. Pepper, D. Anderson, G. Jones and D. A. Ritchie
Microelectronics Journal, 39, 365-368 (2008)
Effect of acid treatment on the structure and electrical properties of nitrogen-doped multiwalled carbon nanotubes
H. J. Burch, E. Brown, S. A. Contera, N. C. Toledo, D. C. Cox, N. Grobert, L. Hao, J. F. Ryan and J. A. Davies
Journal of Physical Chemistry C, 112, 1908-1912 (2008)
Micromagnetic simulations of hysteresis in an array of cobalt nanotubes
K. M. Lebecki, O. Kazakova and M. W. Gutowski
Physica B-condensed Matter, 403, 360-363 (2008)
Planck, units, and modern metrology
J. L. Flowers and B. W. Petley
Annalen Der Physik, 17, 101-114 (2008)
Interface properties of Pb/InAs planar structures for Andreev spectroscopy
F. Magnus, K. A. Yates, S. K. Clowes, Y. Miyoshi, Y. Bugoslavsky, L. F. Cohen, A. Aziz, G. Burnell, M. G. Blamire and P. W. Josephs-Franks
Applied Physics Letters, 92, 012501 (2008)
Supercritical fluid processing of functional oxide core-shell nanocable Arrays
D. C. Arnold, B. Daly, O. Kazakova, M. A. Morris and J. D. Holmes
Integrated Ferroelectrics, 92, 77-86 (2007)
Synthesis and characterization of nanoparticulate MnS within the pores of mesoporous silica
L. Barry, M. Copley, J. D. Holmes, D. J. Otway, O. Kazakova and M. A. Morris
Journal of Solid State Chemistry, 180, 3443-3449 (2007)
Frequency instability measurement system of cryogenic maser oscillator
K. Benmessai, P. Y. Bourgeois, Y. Kersale, N. Bazin, M. E. Tobar, J. G. Hartnett, M. Oxborrow and V. Giordano
Electronics Letters, 43, 1436-1437 (2007)
Modernizing the SI: towards an improved, accessible and enduring system
M. J. T. Milton, J. M. Williams and S. J. Bennett
Metrologia, 44, 356-364 (2007)
Influence of static Jahn-Teller distortion on the magnetic excitation spectrum of PrO2: A synchrotron x-ray and neutron inelastic scattering study
C. H. Webster, L. M. Helme, A. T. Boothroyd, D. F. McMorrow, S. B. Wilkins, C. Detlefs, B. Detlefs, R. I. Bewley and M. J. McKelvy
Physical Review B, 76, 134419 (2007)
Electron spin resonance in Ge0.99Mn0.01 nanowires
R. B. Morgunov, Y. Tanimoto, I. B. Klenina, J. S. Kulkarni, J. D. Holmes and O. L. Kazakova
Journal of Magnetism and Magnetic Materials, 316, 210-213 (2007)
Effects of size and interactions on the magnetic behaviour of elliptical (001) Fe nanoparticles
M. Hanson, R. Brucas and O. Kazakova
Journal of Magnetism and Magnetic Materials, 316, 181-183 (2007)
The synthesis and characterisation of ferromagnetic CaMn2O4 nanowires
D. C. Arnold, O. Kazakova, G. Audoit, J. M. Tobin, J. S. Kulkarni, S. Nikitenko, M. A. Morris and J. D. Holmes
Chemphyschem, 8, 1694-1700 (2007)
Circuit QED with a flux qubit strongly coupled to a coplanar transmission line resonator
T. Lindstrom, C. H. Webster, J. E. Healey, M. S. Colclough, C. M. Muirhead and A. Y. Tzalenchuk
Superconductor Science & Technology, 20, 814-821 (2007)
High accuracy dual lens transmittance measurements
J. Cheung, J. L. Gardner, A. Migdall, S. Polyakov and M. Ware
Applied Optics, 46, 5396-5403 (2007)
Influence of thermal coupling on spin avalanches in Mn-12-acetate
C. H. Webster, O. Kazakova, J. C. Gallop, P. W. Josephs-Franks, A. Hernandez-Minguez and A. Y. Tzalenchuk
Physical Review B, 76, 012403 (2007)
Traceable 2-D finite-element simulation of the whispering-gallery modes of axisymmetric electromagnetic resonators
M. Oxborrow
Ieee Transactions On Microwave Theory and Techniques, 55, 1209-1218 (2007)
Scanned micro-Hall microscope for detection of biofunctionalized magnetic beads (vol 90, art no 162502, 2007)
O. Kazakova, J. Gallop, G. Perkins and L. Cohen
Applied Physics Letters, 90, 269903 (2007)
Zero-point cooling and heating-rate measurements of a single Sr-88(+) ion
V. Letchumanan, G. Wilpers, M. Brownnutt, P. Gill and A. G. Sinclair
Physical Review A, 75, 063425 (2007)
Spatial resolution assessment of Nano-SQUIDs made by focused ion beam
L. Hao, J. C. Macfarlane, J. C. Gallop, E. Romans, D. Cox, D. Hutson and J. Chen
Ieee Transactions On Applied Superconductivity, 17, 742-745 (2007)
One electron makes current flow
S. Giblin
Science, 316, 1130-1131 (2007)
Gigahertz quantized charge pumping
M. D. Blumenthal, B. Kaestner, L. Li, S. Giblin, T. J. B. M. Janssen, M. Pepper, D. Anderson, G. Jones and D. A. Ritchie
Nature Physics, 3, 343-347 (2007)
Controlled photoionization loading of Sr-88(+) for precision ion-trap experiments
M. Brownnutt, V. Letchumanan, G. Wilpers, R. C. Thompson, P. Gill and A. G. Sinclair
Applied Physics B-lasers and Optics, 87, 411-415 (2007)
Engineering the magnetic properties of Ge1-xMnx nanowires
O. Kazakova, J. S. Kulkarni, D. C. Arnold and J. D. Holmes
Journal of Applied Physics, 101, 09H108 (2007)
Frequency stability and phase noise of a pair of X-band cryogenic sapphire oscillators
G. Marra, D. Henderson and M. Oxborrow
Measurement Science & Technology, 18, 1224-1228 (2007)
Achieving sub-100-ns switching of programmable Josephson arrays
J. M. Williams, D. Henderson, P. Patel, R. Behr and L. Palafox
Ieee Transactions On Instrumentation and Measurement, 56, 651-654 (2007)
A highly sensitive detector for radiation in the terahertz region
P. Kleinschmidt, S. P. Giblin, V. Antonov, H. Hashiba, L. Kulik, A. Tzalenchuk and S. Komiyama
Ieee Transactions On Instrumentation and Measurement, 56, 463-467 (2007)
Novel methods of fabrication and metrology of superconducting nanostructures
L. Hao, J. C. Macfarlane, J. C. Gallop, D. Cox, P. Joseph-Franks, D. Hutson, R. Chen and S. K. H. Lam
Ieee Transactions On Instrumentation and Measurement, 56, 392-396 (2007)
Automation of a coaxial bridge for calibration of AC resistors
S. P. Giblin and J. M. Williams
Ieee Transactions On Instrumentation and Measurement, 56, 373-377 (2007)
New capability for generating and measuring small DC currents at NPL
N. E. Fletcher, S. P. Giblin, J. M. Williams and K. J. Lines
Ieee Transactions On Instrumentation and Measurement, 56, 326-330 (2007)
Development of a 60 Hz power standard using SNS programmable Josephson voltage standards
C. J. Burroughs, S. P. Benz, P. D. Dresselhaus, B. C. Waltrip, T. L. Nelson, Y. Chong, J. M. Williams, D. Henderson, P. Patel, L. Palafox and R. Behr
Ieee Transactions On Instrumentation and Measurement, 56, 289-294 (2007)
Scanned micro-Hall microscope for detection of biofunctionalized magnetic beads
O. Kazakova, J. Gallop, G. Perkins and L. Cohen
Applied Physics Letters, 90, 162505 (2007)
Classical resonant activation of a Josephson junction embedded in an LC circuit
G. Rotoli, T. Bauch, T. Lindstrom, D. Stornaiuolo, F. Tafuri and F. Lombardi
Physical Review B, 75, 144501 (2007)
Electron spin resonance in Ge nanowires doped with Mn
R. B. Morgunov, A. I. Dmitriev, Y. Tanimoto, J. S. Kulkarni, J. D. Holmes and O. L. Kazakova
Journal of Magnetism and Magnetic Materials, 310, E824-E826 (2007)
The atomic units, the kilogram and the other proposed changes to the SI
B. W. Petley
Metrologia, 44, 69-72 (2007)
Magnetic Resonance in Ge0.99Mn0.01 Nanowires
R. B. Morgunov, A. I. Dmitriev, Y. Tanimoto, I. B. Klenina, O. L. Kazakova, J. S. Kulkarni and J. D. Holmes
Physics of the Solid State, 49, 296-301 (2007)
Vibration insensitive optical cavity
S. A. Webster, M. Oxborrow and P. Gill
Physical Review A, 75, 011801 (2007)
Measurements of statistical properties of single photons emitted by a solitary NV centre in synthetic diamond
R. Hubbard, Y. B. Ovchinnikov, J. Cheung, N. Fletcher, R. Murray and A. G. Sinclair
Journal of Modern Optics, 54, 441-451 (2007)
Low-dimensional light-emitting transistor with tunable recombination zone
B. Kaestner, J. Wunderlich and T. J. B. M. Janssen
Journal of Modern Optics, 54, 431-439 (2007)
The quantum candela: a re-definition of the standard units for optical radiation
J. Y. Cheung, C. J. Chunnilall, E. R. Woolliams, N. P. Fox, J. R. Mountford, J. Wang and P. J. Thomas
Journal of Modern Optics, 54, 373-396 (2007)
Special issue: Single-photon: Sources, detectors, applications and measurement methods - Introduction
J. Cheung, A. Migdall and S. Castelletto
Journal of Modern Optics, 54, 137-139 (2007)
Prospects for detection of spin accumulation using submicron planar Andreev array spectroscopy
F. Magnus, K. A. Yates, B. Morris, Y. Miyoshi, Y. Bugoslavsky, L. F. Cohen, G. Burnell, M. G. Blamire and P. W. Josephs-Franks
Applied Physics Letters, 89, 262505 (2006)
Dilute magnetic semiconductor nanowires
J. S. Kulkarni, O. Kazakova and J. D. Holmes
Applied Physics A-materials Science & Processing, 85, 277-286 (2006)
Synthesis and characterization of highly ordered cobalt-magnetite nanocable arrays
B. Daly, D. C. Arnold, J. S. Kulkarni, O. Kazakova, M. T. Shaw, S. Nikitenko, D. Erts, M. A. Morris and J. D. Holmes
Small, 2, 1299-1307 (2006)
Detecting photons: Properties and challenges
J. Y. Cheung, C. J. Chunnilall and N. P. Fox
Nuclear Instruments & Methods In Physics Research Section A-accelerators Spectrometers Detectors and Associated Equipment, 567, 100-103 (2006)
The effect of molecular oxygen on the thermal conductance of multi-walled nanotubes - a preliminary investigation
E. Brown, L. Hao, J. C. Gallop, J. C. Macfarlane, P. W. Josephs-Franks and L. F. Cohen
Physica Status Solidi B-basic Solid State Physics, 243, 3380-3384 (2006)
Tunable magnetic properties of metal/metal oxide nanoscale coaxial cables
O. Kazakova, B. Daly and J. D. Holmes
Physical Review B, 74, 184413 (2006)
Dynamic characterisation of the electronic instrumentation used in the calibration of fatigue testing machines
D. Georgakopoulos, J. M. Williams, A. Knott, T. J. Esward and P. S. Wright
Iee Proceedings-science Measurement and Technology, 153, 256-259 (2006)
Characterization of superconducting thin films using a generic property of resonators
A. J. Purnell, L. Hao, J. C. Gallop and L. F. Cohen
Journal of Superconductivity and Novel Magnetism, 19, 633-636 (2006)
Applications of superconductivity for implementation of phase conjugation in the microwave region
L. Hao, J. Gallop and J. Macfarlane
Journal of Superconductivity and Novel Magnetism, 19, 591-598 (2006)
Electrical conductance and breakdown in individual CNx multiwalled nanotubes
H. J. Burch, J. A. Davies, E. Brown, L. Hao, S. A. Contera, N. Grobert and J. F. Ryan
Applied Physics Letters, 89, 143110 (2006)
Monolithic microfabricated ion trap chip design for scaleable quantum processors
M. Brownnutt, G. Wilpers, P. Gill, R. C. Thompson and A. G. Sinclair
New Journal of Physics, 8, 232 (2006)
Josephson dynamics of bicrystal d-wave YBa2Cu3O7-delta dc-SQUIDs
T. Lindstrom, J. Johansson, T. Bauch, E. Stepantsov, F. Lombardi and S. A. Charlebois
Physical Review B, 74, 014503 (2006)
Sensitive detector for a passive terahertz imager
P. Kleinschmidt, S. Giblin, A. Tzalenchuk, H. Hashiba, V. Antonov and S. Komiyama
Journal of Applied Physics, 99, 114504 (2006)
Reply to the comment on 'Evaluation of the primary frequency standard NPL-CsF1'
K. Szymaniec, W. Chalupczak, P. B. Whibberley, S. N. Lea and D. Henderson
Metrologia, 43, L18-L19 (2006)
Direct measurement of penetration length in ultrathin and/or mesoscopic superconducting structures
L. Hao and J. C. Macfarlane
Journal of Applied Physics, 99, 123916 (2006)
Maser oscillation from electronic spin resonance in a cryogenic sapphire frequency standard
P. Y. Bourgeois, M. Oxborrow, M. E. Tobar, N. Bazin, Y. Kersale and V. Giordano
International Journal of Modern Physics B, 20, 1606-1612 (2006)
Optical-clock local-oscillator stabilization scheme
V. Letchumanan, P. Gill, A. G. Sinclair and E. Riis
Journal of the Optical Society of America B-optical Physics, 23, 714-717 (2006)
Isolated quantum dot in application to terahertz photon counting
H. Hashiba, V. Antonov, L. Kulik, A. Tzalenchuk, P. Kleinschmid, S. Giblin and S. Komiyama
Physical Review B, 73, 081310 (2006)
Characterization of superconducting thin films using a generic property of resonators
A. J. Purnell, L. Hao, J. C. Gallop and L. F. Cohen
Journal of Superconductivity and Novel Magnetism, 19, 107-110 (2006)
Probing the magnetic properties of cobalt-germanium nanocable arrays
T. A. Crowley, B. Daly, M. A. Morris, D. Erts, O. Kazakova, J. J. Boland, B. Wu and J. D. Holmes
Journal of Materials Chemistry, 15, 2408-2413 (2005)
Self-organization of Mn-12 single-molecule magnets into ring structures induced by breath-figures as templates
J. Gomez-Segura, O. Kazakova, J. Davies, P. Josephs-Franks, J. Veciana and D. Ruiz-Molina
Chemical Communications, 5615-5617 (2005)
Maser oscillation in a whispering-gallery-mode microwave resonator
P. Y. Bourgeois, N. Bazin, Y. Kersale, V. Giordano, M. E. Tobar and M. Oxborrow
Applied Physics Letters, 87, 224104 (2005)
The kilogram redefinition - an interim solution
J. L. Flowers and B. W. Petley
Metrologia, 42, L31-L34 (2005)
The quantum electrical triangle
J. Gallop
Philosophical Transactions of the Royal Society A-mathematical Physical and Engineering Sciences, 363, 2221-2247 (2005)
Acoustoelectric current transport through a double quantum dot
J. Ebbecke, N. E. Fletcher, T. J. B. M. Janssen, H. E. Beere, D. A. Ritchie and M. Pepper
Physical Review B, 72, 121311 (2005)
Room-temperature ferromagnetism in Ge1-xMnx nanowires
O. Kazakova, J. S. Kulkarni, J. D. Holmes and S. O. Demokritov
Physical Review B, 72, 094415 (2005)
Ballistic thermal and electrical conductance measurements on individual multiwall carbon nanotubes
E. Brown, L. Hao, J. C. Gallop and J. C. Macfarlane
Applied Physics Letters, 87, 023107 (2005)
Structural and magnetic characterization of Ge0.99Mn0.01 nanowire arrays
J. S. Kulkarni, O. Kazakova, D. Erts, M. A. Morris, M. T. Shaw and J. D. Holmes
Chemistry of Materials, 17, 3615-3619 (2005)
Lifetime measurement of the metastable 4d D-2(5/2) state in Sr-88(+) using a single trapped ion
V. Letchumanan, M. A. Wilson, P. Gill and A. G. Sinclair
Physical Review A, 72, 012509 (2005)
Single sensor high-temperature superconducting axial gradiometer with thick film pick-up loops
S. Haining, E. J. Romans, C. M. Pegrum, G. B. Donaldson, L. Hao and J. C. Macfarlane
Ieee Transactions On Applied Superconductivity, 15, 769-772 (2005)
Inductive sensor based on nano-scale SQUIDs
L. Hao, J. C. Macfarlane, S. K. H. Lam, C. P. Foley, P. Josephs-Franks and J. C. Gallop
Ieee Transactions On Applied Superconductivity, 15, 514-517 (2005)
Essen and the National Physical Laboratory's atomic clock
D. Henderson
Metrologia, 42, S4-S9 (2005)
Single-photon sources
M. Oxborrow and A. G. Sinclair
Contemporary Physics, 46, 173-206 (2005)
Coupled microwave resonators for sensitive bolometric detection
L. Hao, J. C. Gallop and J. C. Macfarlane
Ieee Transactions On Instrumentation and Measurement, 54, 886-889 (2005)
Cooling in an optical lattice for a caesium fountain frequency standard
W. Chalupczak, K. Szymaniec and D. Henderson
Ieee Transactions On Instrumentation and Measurement, 54, 837-841 (2005)
Characterization of a high-resolution analog-to-digital converter with a Josephson AC voltage source
W. G. K. Ihlenfeld, E. Mohns, R. Behr, J. M. Williams, P. Patel, G. Ramm and H. Bachmair
Ieee Transactions On Instrumentation and Measurement, 54, 649-652 (2005)
Realization of quantum standard for AC voltage: Overview of a European research project
O. A. Chevtchenko, H. E. van den Brom, E. Houtzager, R. Behr, J. Kohlmann, J. M. Williams, T. J. B. M. Janssen, L. Palafox, D. A. Humphreys, F. Piquemal, S. Djordjevic, O. Monnoye, A. Poletaeff, R. Lapuh, K. E. Rydler and G. Eklund
Ieee Transactions On Instrumentation and Measurement, 54, 628-631 (2005)
Synthesis of precision waveforms using a SINIS Josephson junction array
R. Behr, J. A. Williams, P. Patel, T. J. B. M. Janssen, T. Funck and M. Klonz
Ieee Transactions On Instrumentation and Measurement, 54, 612-615 (2005)
HTS superconducting current comparator: Dynamic range and noise limits
L. Hao, J. C. Macfarlane, S. Haining and J. C. Gallop
Ieee Transactions On Instrumentation and Measurement, 54, 584-587 (2005)
Comparison EUROMET.EM-K8 of DC voltage ratio: Results
G. Marullo-Reedtz, R. Cerri, W. Waldmann, J. Streit, P. Immonen, I. Blanc, F. Raso, T. Funck, B. Schumacher, E. F. Dierikx, M. Nunes, P. Vrabcek, D. Rudohradsky, O. Gunnarsson, K. E. Rydler, B. Jeanneret, B. Jeckelmann, T. Pulfer, S. S. Turhan, O. Yilmaz, J. M. Williams, H. Slinde, K. Lind, J. Nicolas, M. Lindic, E. Flouda and G. Erdos
Ieee Transactions On Instrumentation and Measurement, 54, 576-579 (2005)
Temperature dependence of magnetization reversal in Co and Fe3O4 nanowire arrays
O. Kazakova, D. Erts, T. A. Crowley, J. S. Kulkarni and J. D. Holmes
Journal of Magnetism and Magnetic Materials, 286, 171-176 (2005)
Silent phase qubit based on d-wave Josephson junctions
M. H. S. Amin, A. Y. Smirnov, A. M. Zagoskin, T. Lindstrom, S. A. Charlebois, T. Claeson and A. Y. Tzalenchuk
Physical Review B, 71, 064516 (2005)
Evaluation of the primary frequency standard NPL-CsF1
K. Szymaniec, W. Chalupczak, P. B. Whibberley, S. N. Lea and D. Henderson
Metrologia, 42, 49-57 (2005)
Failure analysis of high temperature superconducting films at high microwave power using microsecond time domain measurements
A. J. Purnell, L. F. Cohen, L. Hao and J. C. Gallop
Applied Physics Letters, 86, 092506 (2005)
Influence of interface-related anisotropy on magnetic properties of Fe- and Co-based thin films and patterned structures
O. Kazakova, M. Hanson and A. C. C. Yu
Journal of Applied Physics, 96, 6512-6519 (2004)
Optimum measurement strategies for trapped ion optical frequency standards
E. Riis and A. G. Sinclair
Journal of Physics B-atomic Molecular and Optical Physics, 37, 4719-4732 (2004)
Counting function for a sphere of anisotropic quartz
N. Sondergaard, T. Guhr, M. Oxborrow, K. Schaadt and C. Ellegaard
Physical Review E, 70, 036206 (2004)
Optical Ramsey spectroscopy of a single trapped Sr-88(+) ion
V. Letchumanan, P. Gill, E. Riis and A. G. Sinclair
Physical Review A, 70, 033419 (2004)
Design of a quantum-based oversampling delta-sigma analogue-to-digital converter for metrology applications
J. R. Pickering, D. Georgakopoulos, J. M. Williams and P. S. Wright
Iee Proceedings-science Measurement and Technology, 151, 362-367 (2004)
Unconventional current-phase relations in YBCO dc-SQUIDs
S. A. Charlebois, T. Lindstrom, A. Y. Tzalenchuk, Z. Ivanov and T. Claeson
Physica C-superconductivity and Its Applications, 408, 926-927 (2004)
Surface acoustic wave driven quantized current transport
F. J. Ahlers, N. E. Fletcher, J. Ebbecke and T. J. B. M. Janssen
Current Applied Physics, 4, 529-533 (2004)
Subhertz-linewidth Nd : YAG laser
S. A. Webster, M. Oxborrow and P. Gill
Optics Letters, 29, 1497-1499 (2004)
Real-time scanning tunnelling microscopy imaging of protein motion at electrode surfaces
C. M. Halliwell, J. A. Davies, J. C. Gallop and R. Josephs-Franks
Bioelectrochemistry, 63, 225-228 (2004)
The simulation and measurement of the response of Josephson junctions to optoelectronically generated short pulses
J. M. Williams, T. J. B. M. Janssen, L. Palafox, D. A. Humphreys, R. Behr, J. Kohlmann and F. Muller
Superconductor Science & Technology, 17, 815-818 (2004)
Influence of post-annealing on the properties of Fe50Pt50 film and submicron size particles
M. Hanson, O. Kazakova and E. B. Svedberg
Journal of Magnetism and Magnetic Materials, 272, E1359-E1361 (2004)
Micromagnetic studies of Fe/Co ellipses with competing anisotropy contributions
S. Felton, K. Gunnarsson, P. Svedlindh, M. Hanson and O. Kazakova
Journal of Magnetism and Magnetic Materials, 272, E1297-E1298 (2004)
Quantized charge pumping through a quantum dot by surface acoustic waves
J. Ebbecke, N. E. Fletcher, T. J. B. M. Janssen, F. J. Ahlers, M. Pepper, H. E. Beere and D. A. Ritchie
Applied Physics Letters, 84, 4319-4321 (2004)
Degenerate ground state and anomalous flux hysteresis in an YBa2Cu3O7 grain boundary rf SQUID
C. H. Gardiner, R. A. M. Lee, J. C. Gallop, A. Y. Tzalenchuk, J. C. Macfarlane and L. Hao
Superconductor Science & Technology, 17, S234-S240 (2004)
Influence of interfaces on the magnetic properties of submicron FeCo elements
O. Kazakova, M. Hanson, R. Wappling and A. C. C. Yu
Journal of Magnetism and Magnetic Materials, 272, 1640-1641 (2004)
Surface resistance measurements of HTS films placed inside a cavity with a puck resonator
T. Nurgaliev, L. F. Cohen, A. Purnell, L. HaO and J. Gallop
Physica C-superconductivity and Its Applications, 403, 276-282 (2004)
Nonlinear microwave response of an MgB2 thin film
A. J. Purnell, L. F. Cohen, H. Y. Zhai, H. M. Christen, M. P. Paranthaman, D. H. Lowndes, L. Hao and J. C. Gallop
Superconductor Science & Technology, 17, 681-684 (2004)
Interplay between shape and magnetocrystalline anisotropies in patterned bcc Fe/Co(001) multilayers
O. Kazakova, M. Hanson, P. Blomqvist and R. Wappling
Physical Review B, 69, 094408 (2004)
Localized plasmon resonances in inhomogeneous metallic nanoclusters
P. Etchegoin, L. F. Cohen, H. Hartigan, R. J. C. Brown, M. J. T. Milton and J. C. Gallop
Chemical Physics Letters, 383, 577-583 (2004)
Single crystal microwave dielectrics at low temperature: losses and non-linearities
J. Gallop and L. Hao
Journal of the European Ceramic Society, 23, 2367-2373 (2003)
SQUIDs: some limits to measurement
J. Gallop
Superconductor Science & Technology, 16, 1575-1582 (2003)
Measurement of the spatial sensitivity of miniature SQUIDs using magnetic-tipped STM
P. Josephs-Franks, L. Hao, A. Tzalenchuk, J. Davies, O. Kazakova, J. C. Gallop, L. Brown and J. C. Macfarlane
Superconductor Science & Technology, 16, 1570-1574 (2003)
A microwave phase conjugating antenna using high temperature superconductors
J. Gallop, D. Peden, L. Hao and J. Macfarlane
Superconductor Science & Technology, 16, 1566-1569 (2003)
Inductive superconducting transition-edge detector for single-photon and macro-molecule detection
L. Hao, J. C. Gallop, C. Gardiner, P. Josephs-Franks, J. C. Macfarlane, S. K. H. Lam and C. Foley
Superconductor Science & Technology, 16, 1479-1482 (2003)
Quantized acoustoelectric current transport through a static quantum dot using a surface acoustic wave
N. E. Fletcher, J. Ebbecke, T. J. B. M. Janssen, F. J. Ahlers, M. Pepper, H. E. Beere and D. A. Ritchie
Physical Review B, 68, 245310 (2003)
On the claims for discovery of elements 110, 111, 112, 114, 116, and 118 - (IUPAC Technical Report)
P. J. Karol, H. Nakahara, B. W. Petley and E. Vogt
Pure and Applied Chemistry, 75, 1601-1611 (2003)
Electromagnetic contribution to surface enhanced Raman scattering revisited
P. Etchegoin, L. F. Cohen, H. Hartigan, R. J. C. Brown, M. J. T. Milton and J. C. Gallop
Journal of Chemical Physics, 119, 5281-5289 (2003)
Spin-wave spectra in nanometric elliptical dots arrays
G. Gubbiotti, O. Kazakova, G. Carlotti, M. Hanson and P. Vavassori
Ieee Transactions On Magnetics, 39, 2750-2752 (2003)
Magnetic properties of FePt circular dots
O. Kazakova, M. Hanson and E. B. Svedberg
Ieee Transactions On Magnetics, 39, 2747-2749 (2003)
Mesoscopic josephson junctions of high-T-c superconductors
A. Y. Tzalenchuk, T. Lindstrom, S. A. Charlebois, E. A. Stepantsov, Z. Ivanov and A. M. Zagoskin
Physical Review B, 68, 100501 (2003)
Experiments on elastomechanical wave functions in chaotic plates and their statistical features
K. Schaadt, T. Guhr, C. Ellegaard and M. Oxborrow
Physical Review E, 68, 036205 (2003)
Microwave intermodulation distortion of MgB2 thin films
G. Lamura, A. J. Purnell, L. F. Cohen, A. Andreone, F. Chiarella, E. Di Gennaro, R. Vaglio, L. Hao and J. Gallop
Applied Physics Letters, 82, 4525-4527 (2003)
New limits in ultrasensitive trace detection by surface enhanced Raman scattering (SERS)
P. Etchegoin, R. C. Maher, L. F. Cohen, H. Hartigan, R. J. C. Brown, M. J. T. Milton and J. C. Gallop
Chemical Physics Letters, 375, 84-90 (2003)
Feasibility studies of ultra-small Josephson junctions for qubits
A. Y. Tzalenchuk, T. Lindstrom, S. A. Charlebois, E. A. Stepantsov, A. M. Zagoskin, Z. Ivanov and T. Claeson
Ieee Transactions On Applied Superconductivity, 13, 948-951 (2003)
HTS current concentrator for remote sensing of charged particle beams
L. Hao, J. C. Macfarlane, C. Carr and J. C. Gallop
Ieee Transactions On Applied Superconductivity, 13, 739-742 (2003)
Inductive superconducting transition-edge photon and particle detector
L. Hao, J. C. Macfarlane, P. Josephs-Franks and J. C. Gallop
Ieee Transactions On Applied Superconductivity, 13, 622-625 (2003)
Magnetic properties of submicron permalloy elements: Effects of heat treatment
O. Kazakova, M. Hanson, A. M. Blixt and B. Hjorvarsson
Journal of Applied Physics, 93, 7334-7336 (2003)
Investigation of microwave losses in superconducting liquid phase epitaxy Y0.7Yb0.3Ba2Cu3O7-delta films
T. Nurgaliev, A. Purnell, X. Qi, A. Berenov, Y. Bugoslavsky, J. MacManus-Driscoll, L. Hao, J. Gallop and L. F. Cohen
Superconductor Science & Technology, 16, 654-659 (2003)
Recrystallisation of single crystal superalloy CMSX-4
D. C. Cox, B. Roebuck, C. M. F. Rae and R. C. Reed
Materials Science and Technology, 19, 440-446 (2003)
HTS cryogenic current comparator for non-invasive sensing of charged particle beams
L. Hao, J. C. Gallop, J. C. Macfarlane and C. Carr
Ieee Transactions On Instrumentation and Measurement, 52, 617-620 (2003)
Study of the limitations of the quantized acoustic current technique at PTB and NPL
J. Ebbecke, N. E. Fletcher, F. J. Ahlers, A. Hartland and T. J. B. M. Janssen
Ieee Transactions On Instrumentation and Measurement, 52, 594-598 (2003)
Comparison CCEM-K8 of DC voltage ratio: Results
G. Marullo-Reedtz, R. Cerri, I. Blanc, O. Gunnarsson, J. Williams, F. Raso, K. T. Kim, R. B. Frenkel, X. Z. Zhang, A. S. Katkov, R. Dziuba, M. Parker, B. M. Wood, L. A. Christian, E. Tarnow, S. K. Mahajan, A. Singh and Y. Sakamoto
Ieee Transactions On Instrumentation and Measurement, 52, 419-423 (2003)
Coupled microwave resonators as the basis for sensitive bolometric detection
L. Hao, J. C. Gallop and J. C. Macfarlane
Ieee Transactions On Instrumentation and Measurement, 52, 328-332 (2003)
Dynamical effects of an unconventional current-phase relation in YBCO dc SQUIDs
T. Lindstrom, S. A. Charlebois, A. Y. Tzalenchuk, Z. Ivanov, M. H. S. Amin and A. M. Zagoskin
Physical Review Letters, 90, 117002 (2003)
A study on the nonlinear microwave electrodynamic response of e-beam evaporated MgB2 superconducting thin films
A. Andreone, E. Di Gennaro, G. Lamura, M. Salluzzo, A. Purnell, L. F. Cohen, L. Hao, J. Gallop, C. Cantoni and M. Paranthaman
Superconductor Science & Technology, 16, 260-263 (2003)
Observation of dynamic oxygen release in hemoglobin using surface enhanced Raman scattering
P. Etchegoin, H. Liem, R. C. Maher, L. F. Cohen, R. J. C. Brown, M. J. T. Milton and J. C. Gallop
Chemical Physics Letters, 367, 223-229 (2003)
The microwave surface impedance of MgB2 thin films
A. J. Purnell, A. A. Zhukov, T. Nurgaliev, G. Lamura, Y. Bugoslavsky, Z. Lockman, J. L. MacManus-Driscoll, H. Y. Zhai, H. M. Christen, M. P. Paranthaman, D. H. Lowndes, M. H. Jo, M. G. Blamire, L. Hao, J. C. Gallop and L. F. Cohen
Superconductor Science & Technology, 16, 1-6 (2003)
A novel amplification mechanism for surface enhanced Raman scattering
P. Etchegon, H. Liem, R. C. Maher, L. F. Cohen, R. J. C. Brown, H. Hartigan, M. J. T. Milton and J. C. Gallop
Chemical Physics Letters, 366, 115-121 (2002)
Investigation of binary Josephson arrays for arbitrary waveform synthesis
P. Kleinschmidt, P. D. Patel, J. M. Williams and T. J. B. M. Janssen
Iee Proceedings-science Measurement and Technology, 149, 313-316 (2002)
Cryogenic current comparator bridge for quantum Hall resistance ratio measurements
P. Kleinschmidt, J. M. Williams, N. E. Fletcher and T. J. B. M. Janssen
Iee Proceedings-science Measurement and Technology, 149, 302-304 (2002)
Temperature as a limitation to the accuracy of SETSAW devices as quantum standards of current
N. E. Fletcher, T. J. B. M. Janssen and A. Hartland
Iee Proceedings-science Measurement and Technology, 149, 299-301 (2002)
Ultracold atoms for ultrastable frequency standards
K. Szymaniec, W. Chalupczak, S. N. Lea and D. Henderson
Acta Physica Polonica B, 33, 2173-2202 (2002)
Intermodulation distortion in HTS thin films: a global heating model
L. Hao, J. Gallop, A. Purnell and L. Cohen
Physica C-superconductivity and Its Applications, 372, 469-473 (2002)
Microwave intermodulation distortion measurements in unpatterned and patterned YBCO thin films
M. Abu Bakar, A. V. Velichko, M. J. Lancaster, A. Porch, J. C. Gallop, L. Hao, L. F. Cohen and A. Zhukov
Physica C-superconductivity and Its Applications, 372, 692-695 (2002)
Microwave surface resistance of MgB2 (vol 80, pg 2347, 2002)
A. A. Zhukov, A. Purnell, Y. Miyoshi, Y. Bugoslavsky, Z. Lockman, A. Berenov, H. Y. Zhai, H. M. Christen, M. P. Paranthaman, D. H. Lowndes, M. H. Jo, M. G. Blamire, L. Hao, J. Gallop, J. L. MacManus-Driscoll and L. F. Cohen
Applied Physics Letters, 80, 4461-4461 (2002)
Microwave surface resistance of MgB2
A. A. Zhukov, A. Purnell, Y. Miyoshi, Y. Bugoslavsky, Z. Lockman, A. Berenov, H. Y. Zhai, H. M. Christen, M. P. Paranthaman, D. H. Lowndes, M. H. Jo, M. G. Blamire, L. Hao, J. Gallop, J. L. MacManus-Driscoll and L. F. Cohen
Applied Physics Letters, 80, 2347-2349 (2002)
Thermally induced nonlinear behaviour of HTS films at high microwave power
L. F. Cohen, A. L. Cowie, A. Purnell, N. A. Lindop, S. Thiess and J. C. Gallop
Superconductor Science & Technology, 15, 559-565 (2002)
HTS cryogenic current comparator for non-invasive sensing of charged-particle beams
L. Hao, J. C. Gallop, J. C. Macfarlane and C. Carr
Physica C-superconductivity and Its Applications, 368, 114-118 (2002)
Miniature dc SQUID devices for the detection of single atomic spin-flips
J. Gallop, P. W. Josephs-Franks, J. Davies, L. Hao and J. Macfarlane
Physica C-superconductivity and Its Applications, 368, 109-113 (2002)
Tunable HTS rf Josephson-effect oscillator based on YBCO-Au-YBCO resistive SQUID
L. Hao, D. A. Peden, J. C. Gallop and J. C. Macfarlane
Superconductor Science & Technology, 14, 1119-1123 (2001)
HTS flux concentrator for non-invasive sensing of charged particle beams
L. Hao, J. C. Gallop, J. C. Macfarlane, C. Carr and G. B. Donaldson
Superconductor Science & Technology, 14, 1115-1118 (2001)
Progress in our knowledge of the fundamental constants of physics
J. L. Flowers and B. W. Petley
Reports On Progress In Physics, 64, 1191-1246 (2001)
On the discovery of the elements 110-112 (IUPAC technical report)
P. J. Karol, H. Nakahara, B. W. Petley and E. Vogt
Pure and Applied Chemistry, 73, 959-967 (2001)
Microwave surface resistance in MgB2
A. A. Zhukov, L. F. Cohen, K. Yates, G. K. Perkins, Y. Bugoslavsky, M. Polichetti, A. Berenov, J. L. M. Driscoll, A. D. Caplin, L. Hao and J. Gallop
Superconductor Science & Technology, 14, L13-L16 (2001)
Spectroscopic and topographic study of LCMO thin films using low-temperature STM
P. M. Hudson, L. F. Cohen, K. A. Yates, F. Damay, J. MacManus-Driscoll, N. Mathur, M. Blamire, C. I. Pakes and P. W. Josephs-Franks
Journal of Magnetism and Magnetic Materials, 226, 2007-2008 (2001)
Improved three-dimensional control of a single strontium ion in an endcap trap
A. G. Sinclair, M. A. Wilson and P. Gil
Optics Communications, 190, 193-203 (2001)
The temperature dependence of gamma ' volume fraction in a Ni-based single crystal superalloy from resistivity measurements
B. Roebuck, D. Cox and R. Reed
Scripta Materialia, 44, 917-921 (2001)
Applications of coupled dielectric resonators using SrTiO3 pucks: Tuneable resonators and novel thermometry
J. C. Gallop and L. Hao
Ieee Transactions On Instrumentation and Measurement, 50, 526-530 (2001)
Low-phase noise temperature-compensated cryogenic whispering gallery mode resonator operated at 63K in a closed-cycle cooler
L. Hao, J. C. Gallop, N. Klein and M. Winter
Ieee Transactions On Instrumentation and Measurement, 50, 515-518 (2001)
Characterization of YBCO/Au/YBCO resistors for HTS Josephson noise thermometry
L. Hao, D. A. Peden, J. C. Macfarlane and J. C. Gallop
Ieee Transactions On Instrumentation and Measurement, 50, 314-317 (2001)
Development of miniature DC SQUID devices for the detection of single atomic spin-flips
C. I. Pakes, P. W. Josephs-Franks, R. P. Reed, S. G. Corner and M. S. Colclough
Ieee Transactions On Instrumentation and Measurement, 50, 310-313 (2001)
Ion beam measurement with a high-temperature superconductor squid and current comparator
L. Hao, J. C. Macfarlane and J. C. Gallop
Ieee Transactions On Instrumentation and Measurement, 50, 302-305 (2001)
A new four terminal-pair bridge for traceable impedance measurements at frequencies up to 1 MHz
S. A. Awan, B. P. Kibble, I. A. Robinson and S. P. Giblin
Ieee Transactions On Instrumentation and Measurement, 50, 282-285 (2001)
Transport behavior of commercially available 100-Omega standard resistors
B. Schumacher, P. Warnecke, W. Poirier, I. Delgado, Z. Msimang, G. Boella, P. O. Hetland, R. E. Elmquist, J. Williams, D. Inglis, B. Jeckelmann, O. Gunnarsson and A. Satrapinsky
Ieee Transactions On Instrumentation and Measurement, 50, 242-244 (2001)
Non-linear microwave response of HTS thin films: a comparison of intermodulation and conventional measurements
L. Hao, J. Gallop, A. Purnell, L. Cohen and S. Thiess
Ieee Transactions On Applied Superconductivity, 11, 3411-3414 (2001)
Temperature dependence of the Josephson linewidth of resistively shunted double junction HTS SQUIDs
D. A. Peden, L. Hao, J. C. Macfarlane, R. A. M. Lee and J. C. Gallop
Ieee Transactions On Applied Superconductivity, 11, 1215-1218 (2001)
Quantum Roulette Noise Thermometer: progress and prospects
R. A. M. Lee, L. Hao, D. A. Peden, J. C. Gallop, J. C. Macfarlane and E. J. Romans
Ieee Transactions On Applied Superconductivity, 11, 859-862 (2001)
Design and performance of an HTS current comparator for charged-particle-beam measurements
L. Hao, J. C. Macfarlane, D. A. Peden, R. A. M. Lee, J. C. Gallop and C. Carr
Ieee Transactions On Applied Superconductivity, 11, 635-638 (2001)
Intermodulation measurements on high temperature superconducting thin films
L. Hao, J. C. Gallop, A. J. Purnell and L. F. Cohen
Journal of Superconductivity, 14, 29-33 (2001)
Accuracy of quantized single-electron current in a one-dimensional channel
T. J. B. M. Janssen and A. Hartland
Physica B, 284, 1790-1791 (2000)
Accurate measurement of currents generated by single electrons transported in a one-dimensional channel
T. J. B. M. Janssen and A. Hartland
Iee Proceedings-science Measurement and Technology, 147, 174-176 (2000)
Small area, low-inductance niobium SQUID for the detection of single atomic spin-flips
P. W. Josephs-Franks, R. P. Reed and C. I. Pakes
Physica B, 280, 540-541 (2000)
Linewidth of a resistively shunted high-temperature-superconductor Josephson heterodyne oscillator
J. C. Macfarlane, L. Hao, D. A. Peden and J. C. Gallop
Applied Physics Letters, 76, 1752-1754 (2000)
Back to the future
S. Giblin
Physics World, 13, 19-19 (2000)
YBCO - Noble metal resistors for HTS Josephson noise thermometry
D. A. Peden, J. C. Macfarlane, L. Hao, R. P. Reed and J. C. Gallop
Ieee Transactions On Applied Superconductivity, 9, 4408-4411 (1999)
HTS SQUID application as a Quantum Roulette Noise Thermometer
L. Hao, J. C. Gallop, R. P. Reed, D. A. Peden and J. C. Macfarlane
Ieee Transactions On Applied Superconductivity, 9, 2971-2974 (1999)
Fine tuning of high Q HTS shielded resonators using HTS coated SrTiO3 pucks
L. Hao, J. C. Gallop, D. Lacey and L. Davis
Ieee Transactions On Applied Superconductivity, 9, 2870-2873 (1999)
Spatially resolved measurements of HTS microwave surface impedence
L. Hao and J. C. Gallop
Ieee Transactions On Applied Superconductivity, 9, 1944-1947 (1999)
The quantum roulette noise thermometer
L. Hao, J. C. Gallop, J. C. Macfarlane, D. A. Peden and R. P. Reed
Ieee Transactions On Instrumentation and Measurement, 48, 659-662 (1999)
Temperature compensated cryogenic whispering gallery mode resonator for microwave frequency standard applications
L. Hao, N. Klein, J. C. Gallop, W. J. Radcliffe and I. S. Ghosh
Ieee Transactions On Instrumentation and Measurement, 48, 524-527 (1999)
A cryogenic current comparator bridge for resistance measurements at currents of up to 100 A
J. M. Williams and P. Kleinschmidt
Ieee Transactions On Instrumentation and Measurement, 48, 375-378 (1999)
Progress toward a precision measurement of the helion magnetic moment in Bohr magnetons
J. L. Flowers, N. J. Cleaton, P. W. Josephs-Franks and B. W. Petley
Ieee Transactions On Instrumentation and Measurement, 48, 209-211 (1999)
Thrills, skills and sexy physics
S. Giblin
Physics World, 11, 17-17 (1998)
The effects of an air gap on the measurement of the dielectric constant of SrTiO3 at cryogenic temperatures
D. Lacey, J. C. Gallop and L. E. Davis
Measurement Science & Technology, 9, 536-539 (1998)
Raman and XRD characterisation, microstructure and microwave loss in YBCO 123 thin films
A. L. Cowie, L. F. Cohen, G. Gibson, Y. H. Li, J. MacManus-Driscoll and J. C. Gallop
Applied Superconductivity 1997, Vols 1 and 2 - Vol 1: Small Scale and Electronic Applications; Vol 2: Large Scale and Power Applications, 53-56 (1997)
Temperature variation of the microwave power dependence in HTS thin films
L. F. Cohen, A. L. Cowie and J. C. Gallop
Applied Superconductivity 1997, Vols 1 and 2 - Vol 1: Small Scale and Electronic Applications; Vol 2: Large Scale and Power Applications, 33-36 (1997)
Effect of junction noise in a resistive high T-c SQUID noise thermometer
J. Macfarlane, D. Peden, L. Hao, J. Gallop and E. Romans
Applied Superconductivity 1997, Vols 1 and 2 - Vol 1: Small Scale and Electronic Applications; Vol 2: Large Scale and Power Applications, 723-726 (1997)
Non-dissipative noise thermometry measured with an HTS SQUID
L. Hao, J. C. Gallop and R. P. Reed
Applied Superconductivity 1997, Vols 1 and 2 - Vol 1: Small Scale and Electronic Applications; Vol 2: Large Scale and Power Applications, 655-658 (1997)
Microwave dielectric composite puck resonators
F. Abbas, J. C. Gallop and L. Hao
Applied Superconductivity 1997, Vols 1 and 2 - Vol 1: Small Scale and Electronic Applications; Vol 2: Large Scale and Power Applications, 315-318 (1997)
High Q HTS shielded composite puck resonators
L. Hao, J. Gallop and F. Abbas
Applied Superconductivity 1997, Vols 1 and 2 - Vol 1: Small Scale and Electronic Applications; Vol 2: Large Scale and Power Applications, 275-278 (1997)
Modelling the variation of microwave losses induced by DC and RF magnetic fields
J. C. Gallop, A. L. Cowie and L. F. Cohen
Applied Superconductivity 1997, Vols 1 and 2 - Vol 1: Small Scale and Electronic Applications; Vol 2: Large Scale and Power Applications, 65-68 (1997)
The field dependence of the microwave vortex pinning parameters: evidence for collective pinning effects and unconventional frictional damping
I. S. Ghosh, L. F. Cohen and J. C. Gallop
Superconductor Science & Technology, 10, 936-943 (1997)
Estimation of the noise temperature of Y-Ba-Cu-O grain boundary Josephson junctions
L. Hao and J. C. Macfarlane
Physica C-superconductivity and Its Applications, 292, 315-321 (1997)
Louis Essen 1908-1997
B. Petley
Physics World, 10, 55-55 (1997)
HTS/ferroelectric microwave phase shifters
F. Abbas, J. C. Gallop and C. D. Langham
Cryogenics, 37, 681-684 (1997)
A simple resistance network for calibrating resistance bridges
D. R. White, K. Jones, J. M. Williams and I. E. Ramsey
Ieee Transactions On Instrumentation and Measurement, 46, 1068-1074 (1997)
Spatially resolved measurements of HTS microwave surface impedance
J. Gallop, L. Hao and F. Abbas
Physica C, 282, 1579-1580 (1997)
Variation in microwave losses induced by dc and rf magnetic fields in HTS thin films
J. C. Gallop, A. Cowie and L. F. Cohen
Physica C, 282, 1577-1578 (1997)
A quantum statistics approach for characterizing superconductors
F. Abbas, J. C. Gallop and L. Hao
Physica C, 282, 2535-2536 (1997)
QRNT: A primary thermometer based on an HTS SQUID
J. Gallop, L. Hao and R. Reed
Physica C, 282, 2485-2486 (1997)
Properties of normal metal shunted YBCO bi-crystal junctions
L. Hao, J. Gallop, R. Reed, J. Macfarlane and E. Romans
Physica C, 282, 2415-2416 (1997)
Shunted YBCO bi-crystal junctions for noise thermometry
L. Hao, J. C. Gallop, R. P. Reed, J. C. Macfarlane and E. Romans
Applied Superconductivity, 5, 297-301 (1997)
The quantum roulette noise thermometer
J. C. Gallop, L. Hao and P. Reed
Applied Superconductivity, 5, 285-289 (1997)
Microwave applications of high-temperature superconductors
J. Gallop
Superconductor Science & Technology, 10, A120-A141 (1997)
Variation of microwave losses induced by dc and rf magnetic fields in Gd123 thin films
L. F. Cohen, A. Cowie, J. C. Gallop, I. S. Ghosh, J. Chrosch and I. N. Goncharov
Ieee Transactions On Applied Superconductivity, 7, 1291-1294 (1997)
Frequency stability of dielectric loaded HTS microwave resonators
J. Gallop, L. Hao, F. Abbas and C. D. Langham
Ieee Transactions On Applied Superconductivity, 7, 3504-3507 (1997)
Resistance network for verifying the accuracy of resistance bridges
D. R. White and J. M. Williams
Ieee Transactions On Instrumentation and Measurement, 46, 329-332 (1997)
Cryogenic sapphire dielectric resonators: Performance and potential
C. D. Langham and J. C. Gallop
Ieee Transactions On Instrumentation and Measurement, 46, 130-132 (1997)
Dielectric loaded HTS resonators as frequency standards and low-phase noise oscillators
J. C. Gallop, C. D. Langham, L. Hao and F. Abbas
Ieee Transactions On Instrumentation and Measurement, 46, 122-125 (1997)
Optically pumped He-3 NMR and atomic hydrogen ESR at 0.6 T
J. L. Flowers, C. J. Bickley, P. W. JosephsFranks and B. W. Petley
Ieee Transactions On Instrumentation and Measurement, 46, 104-107 (1997)
Microwave power dependence in Gd 123 and Tl 2212 thin films: Examining the evidence for limiting behavior
L. F. Cohen, A. Cowie, J. C. Gallop, I. S. Ghosh and I. N. Goncharov
Journal of Superconductivity, 10, 85-90 (1997)
The mole and the unified atomic mass unit
B. W. Petley
Metrologia, 33, 261-264 (1996)
The status of Johnson noise thermometry
D. R. White, R. Galleano, A. Actis, H. Brixy, M. DeGroot, J. Dubbeldam, A. L. Reesink, F. Edler, H. Sakurai, R. L. Shepard and J. C. Gallop
Metrologia, 33, 325-335 (1996)
Electrooptic sampling of low temperature GaAs pulse generators for oscilloscope calibration
A. J. A. Smith, A. G. Roddie and D. Henderson
Optical and Quantum Electronics, 28, 933-943 (1996)
Noise thermometry with HTS SQUIDs
J. Clark and J. Gallop
Applied Superconductivity 1995, Vols. 1 and 2 - Vol 1: Plenary Talks and High Current Applications; Vol 2: Small Scale Applications, 148, 1529-1532 (1995)
HTS/ferroelectric thin-films
F. Abbas, L. E. Davis and J. C. Gallop
Applied Superconductivity 1995, Vols. 1 and 2 - Vol 1: Plenary Talks and High Current Applications; Vol 2: Small Scale Applications, 148, 1211-1214 (1995)
A novel microwave response calibrator based on a high Q superconducting resonator
J. C. Gallop, W. J. Radcliffe and C. D. Langham
Applied Superconductivity 1995, Vols. 1 and 2 - Vol 1: Plenary Talks and High Current Applications; Vol 2: Small Scale Applications, 148, 1203-1206 (1995)
Performance of dielectric loaded superconducting resonators as frequency standards
C. D. Langham and J. C. Gallop
Applied Superconductivity 1995, Vols. 1 and 2 - Vol 1: Plenary Talks and High Current Applications; Vol 2: Small Scale Applications, 148, 1199-1202 (1995)
SQUIDS inductively coupled to superconducting transmission line for microwave phase shifters
F. Abbas, L. E. Davis and J. C. Gallop
Applied Superconductivity 1995, Vols. 1 and 2 - Vol 1: Plenary Talks and High Current Applications; Vol 2: Small Scale Applications, 148, 1151-1154 (1995)
Superconductor-dielectric microwave resonators with ultra-high Q-values
F. Abbas, L. E. Davis and J. C. Gallop
Applied Superconductivity 1995, Vols. 1 and 2 - Vol 1: Plenary Talks and High Current Applications; Vol 2: Small Scale Applications, 148, 1147-1150 (1995)
Correlations between rf- and dc-magnetic field induced microwave losses and the de-screening current density J in HTS thin films
I. S. Ghosh, L. F. Cohen, J. V. Thomas, J. L. MacManusDriscoll, R. Somekh, M. Lenkens, S. Hensen, G. Muller, D. Jedamzik, Z. F. Ren, C. A. Wang, J. H. Wang, J. C. Gallop and A. D. Caplin
Applied Superconductivity 1995, Vols. 1 and 2 - Vol 1: Plenary Talks and High Current Applications; Vol 2: Small Scale Applications, 148, 1083-1086 (1995)
Surface impedance of YBa2Cu3O7-delta thin films on LaAlO3 and NdGaO3 substrates deposited by MOCVD
A. Porch, B. Avenhaus, J. C. Gallop, W. J. Radcliffe, I. M. Watson, M. P. Atwood and D. Cardwell
Applied Superconductivity 1995, Vols. 1 and 2 - Vol 1: Plenary Talks and High Current Applications; Vol 2: Small Scale Applications, 148, 1043-1046 (1995)
Tunable microwave components based on dielectric nonlinearity by using HTS/ferroelectric thin films
F. Abbas, L. E. Davis and J. C. Gallop
Ieee Transactions On Applied Superconductivity, 5, 3511-3517 (1995)
The Effect of Buffer Layers On Slow-wave Propagation In Superconducting Planar Transmission-lines
F. ABBAS, L. E. DAVIS and J. C. GALLOP
Physica C, 254, 137-142 (1995)
Microwave Losses of Ybco Thin-films In High Magnetic-fields
I. S. GHOSH, L. F. COHEN, V. FRY, T. TATE, A. D. CAPLIN, J. C. GALLOP, S. SIEVERS, R. SOMEKH, S. HENSEN and M. LENKENS
Ieee Transactions On Applied Superconductivity, 5, 1756-1759 (1995)
Temperature-dependence of Surface Impedance of Pulsed-laser-deposited Ybco Films
J. H. CLARK, G. B. DONALDSON, J. C. GALLOP and R. M. BOWMAN
Ieee Transactions On Applied Superconductivity, 5, 2555-2558 (1995)
Note On the Origins of Iec-164
B. W. PETLEY
Metrologia, 32, 133-133 (1995)
Josephson Noise Thermometry With Hts Devices
J. C. GALLOP and B. W. PETLEY
Ieee Transactions On Instrumentation and Measurement, 44, 234-237 (1995)
Optically Pumped He-3 Nmr and the Bohr Magneton
J. L. FLOWERS, P. W. FRANKS and B. W. PETLEY
Ieee Transactions On Instrumentation and Measurement, 44, 572-574 (1995)
Correcting High-precision Pulsed Nmr Flux-density Measurements For Asymmetries In the Lineshape
J. L. FLOWERS, P. W. FRANKS and B. W. PETLEY
Ieee Transactions On Instrumentation and Measurement, 44, 488-490 (1995)
Electrical Units - the Last 30 Years
B. W. PETLEY
Metrologia, 31, 495-502 (1995)
A Brief-history of the Electrical Units To 1964
B. W. PETLEY
Metrologia, 31, 481-494 (1995)
Ultra-high-q Resonators For Low-noise, Microwave Signal Generation Using Sapphire Buffer Layers and Superconducting Thin-films
F. ABBAS, L. E. DAVIS and J. C. GALLOP
Superconductor Science & Technology, 7, 495-501 (1994)
Lamb Shifts and Hyperfine-structure In Li-6(+) and Li-7(+) - Theory and Experiment
E. RIIS, A. G. SINCLAIR, O. POULSEN, G. W. F. DRAKE, W. R. C. ROWLEY and A. P. LEVICK
Physical Review A, 49, 207-220 (1994)
Clocking the Fundamental Physical Constants
B. PETLEY
Physics World, 7, 23-24 (1994)
Some Problems In Basic Metrology
B. W. PETLEY
Measurement Techniques Ussr, 36, 1184-1193 (1993)
Field Solution For A Thin-film Superconducting Parallel-plate Transmission-line
F. ABBAS, L. E. DAVIS and J. C. GALLOP
Physica C, 215, 132-144 (1993)
A Comparison of Spectral and Temporal Techniques For the Measurement of Timing Jitter and Their Application In A Modelocked Argon Ion and Dye-laser System
D. HENDERSON and A. G. RODDIE
Optics Communications, 100, 456-460 (1993)
A Bscco(2223) Thin-film Dc Squid Utilizing Natural Grain-boundary Weak-links
F. J. MULLER, J. C. GALLOP, A. D. CAPLIN, S. LABDI and H. RAFFY
Journal of Alloys and Compounds, 195, 703-706 (1993)
A Measurement of the Nuclear Magnetic-moment of the He-3 Atom In Terms of That of the Proton
J. L. FLOWERS, B. W. PETLEY and M. G. RICHARDS
Metrologia, 30, 75-87 (1993)
Measurements of 10-v Standards Using A 1-v Josephson Array
L. C. A. HENDERSON, A. HARTLAND and J. M. WILLIAMS
Ieee Transactions On Instrumentation and Measurement, 42, 577-582 (1993)
Development of A High-stability Cryogenic Sapphire Dielectric Resonator
C. D. LANGHAM and J. C. GALLOP
Ieee Transactions On Instrumentation and Measurement, 42, 96-98 (1993)
The Fundamental Constants of Physics and Spectroscopy
B. W. PETLEY
Physica Scripta, T40, 5-14 (1992)
A Dc Squid Using Natural Grain-boundaries In Bscco
F. J. MULLER, J. C. GALLOP, A. D. CAPLIN, S. LABDI and H. RAFFY
Physica C, 202, 268-270 (1992)
Recent Developments In the Calibration of Fast Sampling Oscilloscopes
D. HENDERSON, A. G. RODDIE and A. J. A. SMITH
Iee Proceedings-a-science Measurement and Technology, 139, 254-260 (1992)
Inductive and Resistive Measurements of Hts Thin-films - Reconciliation Through Percolation
F. J. MULLER, J. C. GALLOP and A. D. CAPLIN
Superconductor Science & Technology, 5, 501-506 (1992)
The Role of the Fundamental Constants of Physics In Metrology
B. W. PETLEY
Metrologia, 29, 95-112 (1992)
A Direct Comparison of the Quantized Hall Resistance In High Critical Current Gallium-arsenide and Silicon Devices
A. HARTLAND, K. JONES, J. M. WILLIAMS, T. GALLOWAY, B. L. GALLAGHER, C. R. H. WHITE and M. HENINI
Surface Science, 263, 112-115 (1992)
Percolative Reconciliation Between Resistive and Magnetic Measurements of the Transition-temperature In Hts Thin-films
F. J. MULLER, J. C. GALLOP and A. D. CAPLIN
Superconductor Science & Technology, 4, 616-619 (1991)
Surface Impedance Properties of Insitu Hts Thin-films Measured In A Superconducting Cavity
J. C. GALLOP, P. G. QUINCEY and W. J. RADCLIFFE
Superconductor Science & Technology, 4, 574-576 (1991)
Characterization of Microwave Surface Impedance of High-temperature Superconductors
J. C. GALLOP and W. J. RADCLIFFE
Superconductor Science & Technology, 4, 568-573 (1991)
Time and Frequency In Fundamental Metrology
B. W. PETLEY
Proceedings of the Ieee, 79, 1070-1076 (1991)
Squids, the Josephson Effects and Measurement
J. GALLOP
Measurement Science & Technology, 2, 485-496 (1991)
High-tc Films Break Microwave Barriers
J. GALLOP
Physics World, 4, 21-22 (1991)
Interferometric Measurements of Te-130(2) Reference Frequencies For 1s-2s Transitions In Hydrogenlike Atoms
G. P. BARWOOD, W. R. C. ROWLEY, P. GILL, J. L. FLOWERS and B. W. PETLEY
Physical Review A, 43, 4783-4790 (1991)
High-temperature Superconductivity - Supercurrents At A Pinch
J. GALLOP
Nature, 350, 465-465 (1991)
Fine Tuning the Si Units and Fundamental Physical Constants
B. W. PETLEY
Proceedings of the Royal Society of London Series A-mathematical Physical and Engineering Sciences, 433, 219-233 (1991)
An Automated Cryogenic Current Comparator Resistance Ratio Bridge
J. M. WILLIAMS and A. HARTLAND
Ieee Transactions On Instrumentation and Measurement, 40, 267-270 (1991)
Surface-resistance of Bulk and Thick-film Yba2cu3ox
N. M. ALFORD, T. W. BUTTON, G. E. PETERSON, P. A. SMITH, L. E. DAVIS, S. J. PENN, M. J. LANCASTER, Z. WU and J. C. GALLOP
Ieee Transactions On Magnetics, 27, 1510-1518 (1991)
Microwave Surface Impedance In A Coaxial Cavity As A Material Characterization Technique
J. C. GALLOP, W. J. RADCLIFFE, T. W. BUTTON and N. M. ALFORD
Ieee Transactions On Magnetics, 27, 1310-1312 (1991)
Thick-film Ybco Microstrip Resonators
R. MOSSAVATI, J. C. GALLOP, T. BUTTON and N. M. ALFORD
Ieee Transactions On Magnetics, 27, 2952-2954 (1991)
Direct Comparison of the Quantized Hall Resistance In Gallium-arsenide and Silicon
A. HARTLAND, K. JONES, J. M. WILLIAMS, B. L. GALLAGHER and T. GALLOWAY
Physical Review Letters, 66, 969-973 (1991)
Microwave Surface Impedance In A Coaxial Cavity As A Material Characterization Technique
J. C. GALLOP, W. J. RADCLIFFE, T. W. BUTTON and N. M. ALFORD
Superconductor Science & Technology, 4, S319-S321 (1991)
Thick-film Ybco Microstrip Resonators
R. MOSSAVATI, J. C. GALLOP, W. J. RADCLIFFE, T. BUTTON and N. M. ALFORD
Superconductor Science & Technology, 4, S145-S147 (1991)
Applications of Low and High-tc Thin-film Devices To Metrology
J. C. GALLOP
Institute of Physics Conference Series, 261-272 (1990)
30 Years (or So) of the Si
B. W. PETLEY
Measurement Science & Technology, 1, 1261-1262 (1990)
Calibration of Fast Sampling Oscilloscopes
D. HENDERSON and A. G. RODDIE
Measurement Science & Technology, 1, 673-679 (1990)
Metrology, the Key To Progress - In the Past and In the Future
B. W. PETLEY
Physica Scripta, 41, 701-711 (1990)
An Optically Pumped He-3 Maser Operating At 0.1-t
J. L. FLOWERS, B. W. PETLEY and M. G. RICHARDS
Journal of Physics B-atomic Molecular and Optical Physics, 23, 1359-1362 (1990)
Multimode Microwave Measurements On A Coaxial Cavity With High-temperature Superconductor Center Conductor
W. J. RADCLIFFE, J. C. GALLOP, C. D. LANGHAM, N. M. ALFORD and T. W. BUTTON
Superconductor Science & Technology, 3, 151-154 (1990)
Developments In Hts Devices
J. C. GALLOP
Superconductor Science & Technology, 3, 20-25 (1990)
Josephson Effects and Microwave Response of Hts Thin-films
J. C. GALLOP, W. J. RADCLIFFE, C. D. LANGHAM, R. SOBOLEWSKI, W. KULA and P. GIERLOWSKI
Physica C, 162, 1545-1546 (1989)