SURFACE-STATE EFFECTS IN HIGH-T(C) SUPERCONDUCTORS

被引：37

作者：

LIU, SH ^{[1
]}

KLEMM, RA ^{[1
]}

机构：

[1] ARGONNE NATL LAB,DIV MAT SCI,ARGONNE,IL 60439

来源：

PHYSICAL REVIEW LETTERS | 1994年 / 73卷 / 07期

关键词：

D O I：

10.1103/PhysRevLett.73.1019

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Under appropriate conditions a band of electronic surface states may exist on the topmost CuO2 layer of a high-T(c) superconductor. This layer can then have higher T(c) and energy gap values than the Bulk. The surface band vanishes at the k(x), k(y) points in the Brillouin zone where the bulk bands touch. Such surface states can cause tunneling results to depend upon the method and the geometry, and alter the interpretation of photoemission measurements of the energy gap. Both experiments are consistent with s-wave order parameter symmetry in high-T(c) materials.

引用

页码：1019 / 1022

页数：4

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