QQ客服 官方微博 反馈留言

	Magnetic Impurities on the Surface of a Topological Insulator
	Liu, Qin ; Liu, Chao-Xing ; Xu, Cenke ; Qi, Xiao-Liang ; Zhang, Shou-Cheng
	2010-10-12 ; 2010-10-12
关键词	HGTE QUANTUM-WELLS TRANSITION STATE Physics, Multidisciplinary
中文摘要	The surface states of a topological insulator are described by an emergent relativistic massless Dirac equation in 2+1 dimensions. In contrast with graphene, there is an odd number of Dirac points, and the electron spin is directly coupled to the momentum. We show that a magnetic impurity opens up a local gap and suppresses the local density of states. Furthermore, the Dirac electronic states mediate an RKKY interaction among the magnetic impurities which is always ferromagnetic, whenever the chemical potential lies near the Dirac point. Through this exchange mechanism, magnetic atoms uniformly deposited on the surface of a topological insulator could naturally form a ferromagnetically ordered film. These effects can be directly measured in STM experiments. We also study the case of quenched disorder through a renormalization group analysis.
语种	英语 ; 英语
出版者	AMER PHYSICAL SOC ; COLLEGE PK ; ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA
内容类型	期刊论文
源URL	[http://hdl.handle.net/123456789/81413]
专题	清华大学
推荐引用方式 GB/T 7714	Liu, Qin,Liu, Chao-Xing,Xu, Cenke,et al. Magnetic Impurities on the Surface of a Topological Insulator[J],2010, 2010.
APA	Liu, Qin,Liu, Chao-Xing,Xu, Cenke,Qi, Xiao-Liang,&Zhang, Shou-Cheng.(2010).Magnetic Impurities on the Surface of a Topological Insulator..
MLA	Liu, Qin,et al."Magnetic Impurities on the Surface of a Topological Insulator".(2010).

个性服务

查看访问统计

相关权益政策

暂无数据

收藏/分享

除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。