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Enhanced flux creep and nonequilibrium optical response in YBaCuO epitaxial films

Authors
Journal
Physica C Superconductivity
0921-4534
Publisher
Elsevier
Publication Date
Identifiers
DOI: 10.1016/0921-4534(89)90841-1

Abstract

Abstract Two novel flux creep related phenomena in YBa 2Cu 3O 7−δ films are presented: a sharp onset of nonequilibrium optical response and a thermally activated electrical resistivity with logarithmic current dependence of the activation energy. This nonlinear current dependence is significantly different from the predictions of the standard flux creep model.

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