Scattering by impurity-induced order-parameter "holes" in d-wave superconductors

被引：33

作者：

Hettler, MH

Hirschfeld, PJ

机构：

[1] Univ Cincinnati, Dept Phys, Cincinnati, OH 45221 USA

[2] Univ Florida, Dept Phys, Gainesville, FL 32611 USA

来源：

PHYSICAL REVIEW B | 1999年 / 59卷 / 14期

关键词：

D O I：

10.1103/PhysRevB.59.9606

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Nonmagnetic impurities in d-wave superconductors cause strong local suppressions of the order parameter. We investigate the observable effects of the scattering of such suppressions in bulk samples by treating the order parameter "hole" as a pointlike off-diagonal scatterer heated within a self-consistent t-matrix approximation. Strong scattering potentials lead to a finite-energy spectral feature in the d-wave "impurity band," the observable effects of which include enhanced low-temperature microwave power absorption and a stronger sensitivity of the London penetration depth to disorder than found previously in simpler "dirty" d-wave models. [S0163-1829(99)03413-X].

引用

页码：9606 / 9610

页数：5

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