Andreev bound states in sodium cobalt oxide

被引：0
|
作者：
Huang, Wen-Min [1 ]
Lin, Hsiu-Hau
机构：
[1] Natl Tsing Hua Univ, Dept Phys, Hsinchu 30013, Taiwan
来源：
PHYSICA C-SUPERCONDUCTIVITY AND ITS APPLICATIONS | 2010年 / 470卷
关键词：
Andreev bound state; Sodium cobalt oxide; Superconductivity; Edge states; Scanning tunneling spectroscopy; PAIRING SYMMETRY; SUPERCONDUCTIVITY; BI2SR2CACU2O8+DELTA;
D O I：
10.1016/j.physc.2009.11.098
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
We study the Andreev bound states with different pairing symmetries and boundary topologies on semi-infinite triangular lattice of the sodium cobalt oxide. A general mapping from the two dimensional lattice to the one-dimensional tight-binding model is developed. Due to the hidden structure of these effective one-dimensional models, the Andreev bound states can be categorized into the positive and negative Witten parity states in supersymmetric algebra. By solving these parity states, the momentum-resolved local density of states near the edge is revealed and can be used to predict the position of the sharp peaks that can be observed in FT-STS experiments. (C) 2009 Elsevier B.V. All rights reserved.
引用
收藏
页码：S749 / S751
页数：3
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