Disorder and chain superconductivity in
WA Atkinson - Physical Review B, 1999 - APS
Physical Review B, 1999•APS
The effects of chain disorder on superconductivity in YBa 2 Cu 3 O 7− δ are discussed within
the context of a proximity model. Chain disorder causes both pair breaking and localization.
The hybridization of chain and plane wave functions reduces the importance of localization,
so that the transport anisotropy remains large in the presence of a finite fraction δ of oxygen
vacancies. Penetration depth and specific heat measurements probe the pair breaking
effects of chain disorder, and are discussed in detail at the level of the self-consistent T …
the context of a proximity model. Chain disorder causes both pair breaking and localization.
The hybridization of chain and plane wave functions reduces the importance of localization,
so that the transport anisotropy remains large in the presence of a finite fraction δ of oxygen
vacancies. Penetration depth and specific heat measurements probe the pair breaking
effects of chain disorder, and are discussed in detail at the level of the self-consistent T …
Abstract
The effects of chain disorder on superconductivity in YBa 2 Cu 3 O 7− δ are discussed within the context of a proximity model. Chain disorder causes both pair breaking and localization. The hybridization of chain and plane wave functions reduces the importance of localization, so that the transport anisotropy remains large in the presence of a finite fraction δ of oxygen vacancies. Penetration depth and specific heat measurements probe the pair breaking effects of chain disorder, and are discussed in detail at the level of the self-consistent T-matrix approximation. Quantitative agreement with these experiments is found when chain disorder is present.
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