Spatial inhomogeneities in disordered d-wave superconductors

被引：65

作者：

Ghosal, A ^{[1
]}

Randeria, M ^{[1
]}

Trivedi, N ^{[1
]}

机构：

[1] Tata Inst Fundamental Res, Dept Theoret Phys, Homi Bhabha Rd, Mumbai 400005, India

来源：

PHYSICAL REVIEW B | 2001年 / 63卷 / 02期

关键词：

D O I：

10.1103/PhysRevB.63.020505

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

We study a short coherence length d-wave superconductor with a finite density of unitary scatterers using the Bogoliubov-deGennes technique. We find that the low-energy density of states is reduced, the superfluid stiffness is significantly larger, and off-diagonal long-range order is more robust than the conventional self-consistent T-matrix prediction. These results an a consequence of the inhomogeneous pairing amplitude in the ground state and of the low-lying excitations formed by hybridized impurity resonances. This inhomogeneous response accounts for the insensitivity of high-T-c superconductors to impurities.

引用

页数：4

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