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Proposal to detect vortices above the superconducting transition temperature

Source: Phys. Rev. B 82, 060506 (2010); doi:10.1103/PhysRevB.82.060506

Published 9 August 2010

PACS
  • 74.25.Ha
    Magnetic properties of superconductors
  • 74.72.Kf
    Pseudogap regime
  • 74.78.-w
    Superconducting films and low-dimensional structures
  • YEAR: 2010
PUBLICATION DATA
Publisher:
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Zoran Ristivojevic and M. R. Norman
Materials Science Division, Argonne National Laboratory, Argonne, Illinois 60439, USA
We propose a simple experiment to determine whether vortices persist above the superconducting transition temperature Tc in the pseudogap phase of high-temperature cuprate superconductors. This involves using a magnetic dot to stabilize a vortex in a thin cuprate film beneath the dot. We calculate the magnetic field profile as a function of distance from the dot if a vortex is present and discuss possible measurements that could be done to detect this. Finally, we comment on the temperature range where a stable vortex should be observable. ©2010 The American Physical Society
History: Received 27 May 2010; revised 13 July 2010; published 9 August 2010
Permalink: http://link.aps.org/abstract/PRB/v82/e060506
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