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Ginzburg-Landau Theory of Dirty Two Band s(+/-) Superconductors

Authors Ng, Tai-Kai
Issue Date 2009
Source Physical review letters, v. 103, (23), 2009, DEC 4, article number 236402
Summary In this Letter, we study the effect of nonmagnetic impurities on two-band superconductors by deriving the corresponding Ginzburg-Landau equation. Depending on the strength of (impurity-induced) interband scattering, we find that there are two distinctive regions where the superconductors behave very differently. In the strong impurity-induced interband scattering regime T-c =tau(-1)(t), the dirty two-band superconductor is described by a network of frustrated two-band superconductor grains connected by Josephson tunneling junctions, and the Anderson theorem breaks down.
ISSN 0031-9007
Rights Physical Review Letters © copyright (2009) American Physical Society. The Journal's web site is located at
Language English
Format Article
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