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首页> 外文期刊>Physica Scripta: An International Journal for Experimental and Theoretical Physics >Theory of s-wave superconductor containing impurities with retarded interaction with quasiparticles
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Theory of s-wave superconductor containing impurities with retarded interaction with quasiparticles

机译:包含与准粒子相互作用受阻的杂质的s波超导体理论

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摘要

We propose a perturbation theory and diagram technique for a disordered metal when scattering of quasiparticles by nonmagnetic impurities is caused with a retarded interaction. The perturbation theory generalizes a case of elastic scattering in a disordered metal. Eliashberg equations for s-wave superconductivity are generalized for such a disordered superconductor. Anderson's theorem is found to be violated in the sense that embedding of the impurities into an s-wave superconductor increases its critical temperature. We show that the amplification of superconducting properties is a result of nonelastic effects in a scattering by the impurities.
机译:我们提出了一种无序金属的扰动理论和图技术,当非磁性杂质导致准粒子的散射是由于相互作用的延迟而引起的。摄动理论概括了无序金属中弹性散射的情况。对于这种无序的超导体,推广了s波超导性的Eliashberg方程。在将杂质嵌入s波超导体中会增加其临界温度的意义上,发现违反了安德森定理。我们表明,超导特性的放大是杂质散射中非弹性效应的结果。

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