Biography

Jon Fletcher received his PhD degree in Physics in 2005 from the University of Bristol. His PhD work focused on the 'multi-band' superconductor MgB₂.

As a post-doctoral researcher at Bristol, he investigated the origins of unconventional superconductivity through Fermi surface studies at extremely high magnetic fields and measurements of London penetration depth at very low temperature.

Current Interests

Jon joined the Quantum Detection group in NPL in 2009 and is now working on the manipulation of single electrons in semiconductor based quantum dot pumps.

Selected Publications

• J.D. Fletcher, M. Kataoka, S.P. Giblin, Sunghun Park, H.-S.Sim, P. See, T.J.B.M. Janssen, J.P. Griffiths, G.A.C. Jones, H.E. Beere, D.A. Ritchie
  Stabilization of single-electron pumps by high magnetic fields
  http://arxiv.org/abs/1107.4560
• 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.
  An accurate high-speed single-electron quantum dot pump.
  New J.Phys., 12, 073013 (2010).
  http://iopscience.iop.org/1367-2630/12/7/073013
• J. D. Fletcher, A. Serafin, L. Malone, J. G. Analytis, J. H. Chu, A. S. Erickson, I. R. Fisher, and A. Carrington.
  Evidence for a Nodal-Line Superconducting State in LaFePO.
  Phys. Rev. Lett., 102, 147001 (2009).
  http://link.aps.org/abstract/PRL/v102/p147001
• A. F. Bangura, J. D. Fletcher, A. Carrington, J. Levallois, M. Nardone, B. Vignolle, P. J. Heard, N. Doiron-Leyraud, D. LeBoeuf, L. Taillefer, S. Adachi, C. Proust, and N.E. Hussey.
  Small Fermi surface pockets in underdoped high temperature superconductors: Observation of Shubnikov-de Haas oscillations in YBa₂Cu₄O₈. Phys. Rev. Lett., 100, 047004 (2008).
  http://prl.aps.org/abstract/PRL/v100/i4/e047004
• J. D. Fletcher, A. Carrington, O. J. Taylor, S. M. Kazakov, and J. Karpinski.
  Temperature-dependent anisotropy of the penetration depth and coherence length of MgB₂
  Phys. Rev. Lett., 95, 097005 (2005).
  http://link.aps.org/abstract/PRL/v95/p097005

See full publications list

Posters

• Effect of magnetic fields on high accuracy single-electron pumps
• Quantum Spillage in a Single Electron Pump
• Rectification artefacts in the tunable-barrier electron pump

Contact details

Tel: +44 20 8943 6819
Email: jonathan.fletcher@npl.co.uk