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Maximal persistent current in a type-II superconductor with an artificial pinning array at the matching magnetic field

Source: Phys. Rev. B 81, 064507 (2010); doi:10.1103/PhysRevB.81.064507

Published 17 February 2010

PACS
  • 74.20.De
    Phenomenological theories of superconductivity
  • 74.25.Uv
    Vortex phases (includes vortex lattices, vortex liquids, and vortex glasses)
  • 74.78.Fk
    Superconducting multilayers, superlattices, heterostructures
  • YEAR: 2010
PUBLICATION DATA
Publisher:
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B. Rosenstein,1 I. Shapiro,2 and B. Ya. Shapiro2
1Department of Electrohysics, National Chiao Tung University, Hsinchu, Taiwan, Republic of China
2Department of Physics, Institute of Superconductivity, Bar-Ilan University, 52900 Ramat-Gan, Israel
The current carrying steady state of the pinned flux line lattice created by magnetic field is described. We calculate analytically the critical current for the case of the matching field (when the number of vortices is equal to that of the pinning centers) using a simple variational method in the framework of Ginzburg-Landau equations. The vortex cores are deformed and displaced in the current carrying state. Displacement of the centers of the vortices with respect to pinning centers and structure of these states are determined. ©2010 The American Physical Society
History: Received 17 November 2009; revised 20 January 2010; published 17 February 2010
Permalink: http://link.aps.org/abstract/PRB/v81/e064507
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