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
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.
引用
收藏
页数:4
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