ITP OpenIR  > 理论物理所1978-2010年知识产出
Spin helix of magnetic impurities in two-dimensional helical metal
Ye, F.; Ding, G. H.; Zhai, H.; Su, Z. B.; Ye, F , Chinese Acad Sci, Grad Univ, Coll Mat Sci & Optoelect Technol, Beijing 100049, Peoples R China
2010
发表期刊EPL
ISSN0295-5075
卷号90期号:4页码:-
摘要The surface state of a topological insulator dubbed as helical metal is a unique metallic system, which exhibits one single Dirac cone and spin-momentum locking. We show that the behaviors of magnetic impurities embedded in this kind of surface states manifest the uniqueness of helical metals among other conventional Dirac materials such as graphene. We find there is a significant Dzyaloshinskii-Moriya (DM) term among the effective interactions between impurity spins mediated by the conduction electrons. For a chain of impurity spins, we show that such a DM interaction gives rise to a single-handed spin helix state, the handedness of which is locked with the sign of the Fermi velocity of the emergent Dirac fermions. We also point out that the polarization of impurity spins can be controlled via electric voltage for dilute magnetic-impurity concentration. Copyright (C) EPLA, 2010
部门归属[Ye, F] Chinese Acad Sci, Grad Univ, Coll Mat Sci & Optoelect Technol, Beijing 100049, Peoples R China; [Ye, F; Zhai, H] Tsinghua Univ, Inst Adv Study, Beijing 100084, Peoples R China; [Ding, GH] Shanghai Jiao Tong Univ, Dept Phys, Shanghai 200240, Peoples R China; [Su, ZB] Chinese Acad Sci, Inst Theoret Phys, Beijing 100089, Peoples R China
关键词Single Dirac Cone Topological-insulator Surface Bi2te3
学科领域Physics
资助者NSFC[10904081]; Tsinghua University, NSFC[10944002, 10847002] ; NSFC[10904081]; Tsinghua University, NSFC[10944002, 10847002] ; NSFC[10904081]; Tsinghua University, NSFC[10944002, 10847002] ; NSFC[10904081]; Tsinghua University, NSFC[10944002, 10847002]
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收录类别SCI
资助者NSFC[10904081]; Tsinghua University, NSFC[10944002, 10847002] ; NSFC[10904081]; Tsinghua University, NSFC[10944002, 10847002] ; NSFC[10904081]; Tsinghua University, NSFC[10944002, 10847002] ; NSFC[10904081]; Tsinghua University, NSFC[10944002, 10847002]
WOS记录号WOS:000279119200023
引用统计
被引频次:20[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.itp.ac.cn/handle/311006/5109
专题理论物理所1978-2010年知识产出
通讯作者Ye, F , Chinese Acad Sci, Grad Univ, Coll Mat Sci & Optoelect Technol, Beijing 100049, Peoples R China
推荐引用方式
GB/T 7714
Ye, F.,Ding, G. H.,Zhai, H.,et al. Spin helix of magnetic impurities in two-dimensional helical metal[J]. EPL,2010,90(4):-.
APA Ye, F.,Ding, G. H.,Zhai, H.,Su, Z. B.,&Ye, F , Chinese Acad Sci, Grad Univ, Coll Mat Sci & Optoelect Technol, Beijing 100049, Peoples R China.(2010).Spin helix of magnetic impurities in two-dimensional helical metal.EPL,90(4),-.
MLA Ye, F.,et al."Spin helix of magnetic impurities in two-dimensional helical metal".EPL 90.4(2010):-.
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