Local density of states around a magnetic impurity in high-Tc superconductors based on the t-J model

被引：68

作者：

Tsuchiura, H ^{[1
]}

Tanaka, Y

Ogata, M

Kashiwaya, S

机构：

[1] Sci & Technol Corp, CREST, Nagoya, Aichi 4648603, Japan

[2] Nagoya Univ, Dept Appl Phys, 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：

PHYSICAL REVIEW LETTERS | 2000年 / 84卷 / 14期

关键词：

D O I：

10.1103/PhysRevLett.84.3165

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

The local density of states (LDOS) around a magnetic impurity in high-T-c, superconductors is studied using the two-dimensional t-J model with a realistic band structure. The order parameters are determined in a self-consistent way within the Gutzwiller approximation and the Bogoliubov-de Gennes theory. In sharp contrast with the nonmagnetic impurity case, the LDOS near the magnetic impurity shows two resonance peaks reflecting the presence of spin-dependent resonance states. It is also shown that these resonance states are approximately localized around the impurity. The present results have an immediate connection with the scanning tunneling spectroscopy observation of Bi2Sr2Ca(Cu1-xNi[Zn](x))(2)O8+delta.

引用

页码：3165 / 3168

页数：4

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