Energy spectrum of Dirac electrons on the surface of a topological insulator modulated by a spiral magnetization superlattice

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	Energy spectrum of Dirac electrons on the surface of a topological insulator modulated by a spiral magnetization superlattice
	Zhai F ; Mu PY ; Chang K
刊名	physical review b
	2011
卷号	83 期号:19 页码:article no.195402
ISSN号	1098-0121
通讯作者	zhai, f, zhejiang normal univ, ctr stat & theoret condensed matter phys, jinhua 321004, peoples r china.
学科主题	半导体物理
收录类别	SCI
资助信息	nsfc [10704013, 60525405, 10874175]; rfdp [200801411042]
语种	英语
公开日期	2011-07-05 ; 2011-07-15
附注	we investigate the effect of a spiral magnetization superlattice on the surface electronic states of a three-dimensional topological insulator. it is shown that the energy spectrum of this superlattice system has only two dirac points but many semi-dirac points. the effective hamiltonian near those points is expressed in terms of the spiral wave vector and the modulation amplitude. near semi-dirac points the band is linear along the spiral direction and quadratic along the transverse direction. there are two types of semi-dirac points, which are distinguished by the number of parabolic bands passing them.
内容类型	期刊论文
源URL	[http://ir.semi.ac.cn/handle/172111/20851]
专题	半导体研究所_半导体超晶格国家重点实验室
推荐引用方式 GB/T 7714	Zhai F,Mu PY,Chang K. Energy spectrum of Dirac electrons on the surface of a topological insulator modulated by a spiral magnetization superlattice[J]. physical review b,2011,83(19):article no.195402.
APA	Zhai F,Mu PY,&Chang K.(2011).Energy spectrum of Dirac electrons on the surface of a topological insulator modulated by a spiral magnetization superlattice.physical review b,83(19),article no.195402.
MLA	Zhai F,et al."Energy spectrum of Dirac electrons on the surface of a topological insulator modulated by a spiral magnetization superlattice".physical review b 83.19(2011):article no.195402.