Lattice model for the broken-time-reversal-symmetry pairing state near a surface of d-wave superconductors

被引：42

作者：

Zhu, JX ^{[1
]}

Friedman, B

Ting, CS

机构：

[1] Univ Houston, Texas Ctr Superconduct, Houston, TX 77204 USA

[2] Univ Houston, Dept Phys, Houston, TX 77204 USA

[3] Sam Houston State Univ, Dept Phys, Huntsville, TX 77341 USA

来源：

PHYSICAL REVIEW B | 1999年 / 59卷 / 05期

关键词：

D O I：

10.1103/PhysRevB.59.3353

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Based on an extended Hubbard model, the spatial variation of the order parameter is calculated self-consistently near the surface of d-wave superconductors. It is shown a d+ is order parameter can be induced near a {110} surface, leading to splitting of the zero-energy peak in the surface local density of states and the generation of a spontaneous surface supercurrent. This splitting can be diminished by the increase of orthorhombicity, on-site repulsive interaction, or temperature. Our results give a microscopic explanation for the surface broken-time-reversal-symmetry pairing state. [S0163-1829(99)04705-0].

引用

页码：3353 / 3356

页数：4

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