Electrically Controllable Surface Magnetism on the Surface of Topological Insulators

被引：234

作者：

Zhu, Jia-Ji ^{[1
]}

Yao, Dao-Xin ^{[3
]}

Zhang, Shou-Cheng ^{[4
]}

Chang, Kai ^{[1
,2
]}

机构：

[1] Chinese Acad Sci, Inst Semicond, SKLSM, Beijing 100083, Peoples R China

[2] Beijing Computat Sci Res Ctr, Beijing 100089, Peoples R China

[3] Sun Yat Sen Univ, Sch Phys & Engn, Guangzhou 510275, Guangdong, Peoples R China

[4] Stanford Univ, Dept Phys, Stanford, CA 94305 USA

来源：

PHYSICAL REVIEW LETTERS | 2011年 / 106卷 / 09期

关键词：

HGTE QUANTUM-WELLS; SINGLE DIRAC CONE; SPIN CHIRALITY; PHASE; BI2TE3;

D O I：

10.1103/PhysRevLett.106.097201

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We study theoretically the RKKY interaction between magnetic impurities on the surface of three-dimensional topological insulators, mediated by the helical Dirac electrons. Exact analytical expression shows that the RKKY interaction consists of the Heisenberg-like, Ising-like, and Dzyaloshinskii-Moriya (DM)-like terms. It provides us a new way to control surface magnetism electrically. The gap opened by doped magnetic ions can lead to a short-range Bloembergen-Rowland interaction. The competition among the Heisenberg, Ising, and DM terms leads to rich spin configurations and an anomalous Hall effect on different lattices.

引用

页数：4

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