THERMAL SOFTENING OF THE INTERPLANE JOSEPHSON COUPLING IN HIGHLY ANISOTROPIC HIGH Tc SUPERCONDUCTORS

Author:

KOPELEVICH Y.1,ESQUINAZI P.1,ZIESE M.1

Affiliation:

1. Physikalisches Institut, University of Bayreuth, 95440 Bayreuth, Germany

Abstract

Different experimental techniques reveal a nearly magnetic-field-independent depinning of the flux line lattice (FLL) between 20 and 30 K in highly anisotropic high temperature superconductors like Bi 2:2:1:2 and similar compounds. This anomalous behavior of the FLL has been partially unnoticed in the literature and is the subject of this experimental review. We compare data from literature obtained with different experimental techniques and discuss a possible common origin based on a “softening” of the interplane Josephson coupling.

Publisher

World Scientific Pub Co Pte Lt

Subject

Condensed Matter Physics,Statistical and Nonlinear Physics

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