Quasiparticle bound states around impurities in dx2-y2-wave superconductors

被引：41

作者：

Haas, S ^{[1
]}

Maki, K ^{[1
]}

机构：

[1] Univ So Calif, Dept Phys & Astron, Los Angeles, CA 90089 USA

来源：

PHYSICAL REVIEW LETTERS | 2000年 / 85卷 / 10期

关键词：

D O I：

10.1103/PhysRevLett.85.2172

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Zn and Ni impurities in the holt-doped high-temperature superconductors are known to have strong effects on thermodynamic and transport properties. A recent scanning tunneling microscope study of Zn-doped Bi2212 [S. H. Pan ei nl.. Nature (London) 403, 746 (2000)] has provided high-resolution images of the local density of states around nonmagnetic impurities in d(x2-y2)-wave superconductors. These pictures contain detailed information about the spinor wave functions u(r) and nu(r) of bound states with energy E-0 similar to Delta/30, centered at the Zn sites. We show that this type of wave function follows from the solutions of the Bogoliubov-de Gennes equations for d(x2-y2)-wave superconductors.

引用

页码：2172 / 2175

页数：4

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