The resonance states around an impurity in dx2-y2-wave superconductors

被引：0
|
作者：
Tsuchiura, H [1 ]
Tanaka, Y
Ogata, M
Kashiwaya, S
机构：
[1] Nagoya Univ, Dept Appl Phys, Nagoya, Aichi 4648603, Japan
[2] Japan Sci & Technol Corp, CREST, Nagoya, Aichi 4648603, Japan
[3] Univ Tokyo, Grad Sch Arts & Sci, Dept Basic Sci, Meguro Ku, Tokyo 1538902, Japan
[4] Electrotech Lab, Tsukuba, Ibaraki 3058568, Japan
来源：
PHYSICA B | 2000年 / 284卷
关键词：
d(x2-y2)-wave superconductivity; two-dimensional t-t '-J model;
D O I：
10.1016/S0921-4526(99)01996-1
中图分类号：
O469 [凝聚态物理学];
学科分类号：
070205 ;
摘要：
We investigate the local density of states (LDOS) around a nonmagnetic impurity in the superconducting state of the two-dimensional t-t'-J model away from half-filling. The order parameters are determined self-consistently within the Gutzwiller approximation and the Bogoliubov-de Gennes theory. Similar to our previous results of the t-J model near half-filling, the zero-energy peak in the LDOS is also found when the electron-hole symmetry is broken. (C) 2000 Elsevier Science B.V. All rights reserved.
引用
收藏
页码：427 / 428
页数：2
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