Bound states induced by two impurities in a p-wave superconductor

被引：0
作者：
Choi, CH [1 ]
机构：
[1] Kyungwon Univ, Dept Phys, Sungnam 461701, South Korea
来源：
JOURNAL OF THE KOREAN PHYSICAL SOCIETY | 2004年 / 44卷 / 02期
关键词：
two impurities in superconductor; impurity-induced bound states; unconventional superconductor;
D O I：
暂无
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
we study the bound states induced by two nonmagnetic impurities in a p-wave superconductor. The bound state of a single impurity is split into two in the presence two impurities. The resonance energy of the bound state oscillates as the separation between impurities increases and can even cross the Fermi energy at a certain value of the separation and the impurity strength. The induced bound states,can be understood by quantum interference between the quasiparticle wave functions scattered by impurities.
引用
收藏
页码：355 / 359
页数：5
相关论文
共 19 条
[1]  
ABRAMOWITZ M, 1963, HDB MATH FUNCTIONS
[2]  
[Anonymous], 1992, INTRO QUANTUM THEORY
[3]   INFLUENCE OF GAP EXTREMA ON THE TUNNELING CONDUCTANCE NEAR AN IMPURITY IN AN ANISOTROPIC SUPERCONDUCTOR [J].
BYERS, JM ;
FLATTE, ME ;
SCALAPINO, DJ .
PHYSICAL REVIEW LETTERS, 1993, 71 (20) :3363-3366
[4]  
Choi CH, 2003, J KOREAN PHYS SOC, V42, P657
[5]  
Choi CH, 2002, J KOREAN PHYS SOC, V40, P480
[6]   Quasiparticle bound state induced by a single impurity in a d-wave superconductor -: art. no. 064507 [J].
Choi, CH .
PHYSICAL REVIEW B, 2001, 63 (06)
[7]  
Choi CH, 2001, J KOREAN PHYS SOC, V38, P734
[8]   DENSITY-OF-STATES NEAR AN IMPURITY IN AN UNCONVENTIONAL SUPERCONDUCTOR [J].
CHOI, CH .
PHYSICAL REVIEW B, 1994, 50 (05) :3491-3494
[9]   Nanoscale one-dimensional scattering resonances in the CuO chains of YBa2Cu3O6+x -: art. no. 097002 [J].
Derro, DJ ;
Hudson, EW ;
Lang, KM ;
Pan, SH ;
Davis, JC ;
Markert, JT ;
de Lozanne, AL .
PHYSICAL REVIEW LETTERS, 2002, 88 (09) :4-970024
[10]  
Economou E., 1983, Green's Functions in Quantum Physics
12