Two Interacting Helical Edge Modes in Quantum Spin Hall Systems

被引：35
作者：
Tanaka, Yukio [1 ]
Nagaosa, Naoto [2 ,3 ]
机构：
[1] Nagoya Univ, Dept Appl Phys, Nagoya, Aichi 4648603, Japan
[2] Univ Tokyo, Dept Appl Phys, Tokyo 1138656, Japan
[3] RIKEN, ASI, Cross Correlated Mat Res Grp CMRG, Wako, Saitama 3510198, Japan
来源：
PHYSICAL REVIEW LETTERS | 2009年 / 103卷 / 16期
关键词：
PHASE-TRANSITION; CHARGE; STATE;
D O I：
10.1103/PhysRevLett.103.166403
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
We study theoretically two interacting one-dimensional helical modes at the edges of the quantum spin Hall systems. A new type of interedge correlated liquid without a spin gap is found when the intraedge repulsion is stronger than the interedge repulsion. This liquid shows a diverging density wave and superconductivity correlations much stronger than those of the spinfull electrons. Possible experimental observations are also discussed.
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页数：4
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