Nonlinear transverse magnetic moment in anisotropic superconductors

Igor Žutić, Oriol T Valls

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14 Scopus citations

Abstract

We consider the nonlinear transverse magnetic moment that arises in the Meissner state of superconductors with a strongly anisotropic order parameter. We compute this magnetic moment as a function of applied field and geometry, assuming (Formula presented)-wave pairing, for realistic samples, finite in all three dimensions, of high-temperature superconducting materials. Return currents, shape effects, and the anisotropy of the penetration depth tensor are all included. We numerically solve the nonlinear Maxwell-London equations for a finite system. Results are discussed in terms of the relevant parameters. The effect, which is a probe of the order parameter symmetry in the bulk, not just the surface, of the sample should be readily measurable if pairing is in a (Formula presented)-wave state. Failure to observe it would set a lower bound to the (Formula presented)-wave component.

Original languageEnglish (US)
Pages (from-to)15500-15512
Number of pages13
JournalPhysical Review B - Condensed Matter and Materials Physics
Volume54
Issue number21
DOIs
StatePublished - 1996

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Copyright 2017 Elsevier B.V., All rights reserved.

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