Work

Electrically Controllable Surface Magnetism on the Surface of Topological Insulators

Year: 2011

Type: article

Abstract: 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.

Source: Physical Review Letters

DOI: 10.1103/physrevlett.106.097201

Authors: Jia-Ji Zhu, Dao-Xin Yao, Shou-Cheng Zhang, Kai Chang

Institutions: Chinese Academy of Sciences, Institute of Semiconductors, Sun Yat-sen University, Stanford University, Beijing Computational Science Research Center

Language: English

Topic: Topological Materials and Phenomena

Subfield: Atomic and Molecular Physics, and Optics

Field: Physics and Astronomy

Domain: Physical Sciences

Open Access status: green

Funder: National Science Foundation

OpenAlex ID: W1994054964

FWCI: 11.25

Cites: 23

Cited by: 260

Related to: 10