Orbital-selective spin texture and its manipulation in a topological insulator

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	Orbital-selective spin texture and its manipulation in a topological insulator
	Xie, ZJ ; He, SL ; Chen, CY ; Feng, Y ; Yi, HM ; Liang, AJ ; Zhao, L ; Mou, DX ; He, JF ; Peng, YY ; Liu, X ; Liu, Y ; Liu, GD ; Dong, XL ; Yu, L ; Zhang, J ; Zhang, SJ ; Wang, ZM ; Zhang, FF ; Yang, F ; Peng, QJ ; Wang, XY ; Chen, CT ; Xu, ZY ; Zhou, XJ
刊名	NATURE COMMUNICATIONS
	2014
卷号	5
ISSN号	2041-1723
通讯作者	Zhou, XJ (reprint author), Chinese Acad Sci, Inst Phys, Beijing Natl Lab Condensed Matter Phys, Beijing 100190, Peoples R China.
中文摘要	Topological insulators represent a new quantum state of matter that are insulating in the bulk but metallic on the edge or surface. In the Dirac surface state, it is well-established that the electron spin is locked with the crystal momentum. Here we report a new phenomenon of the spin texture locking with the orbital texture in a topological insulator Bi2Se3. We observe light-polarization-dependent spin texture of both the upper and lower Dirac cones that constitutes strong evidence of the orbital-dependent spin texture in Bi2Se3. The different spin texture detected in variable polarization geometry is the manifestation of the spin-orbital texture in the initial state combined with the photoemission matrix element effects. Our observations provide a new orbital degree of freedom and a new way of light manipulation in controlling the spin structure of the topological insulators that are important for their future applications in spin-related technologies.
资助信息	National Natural Science Foundation of China [91021006, 10974239, 11174346]; Ministry of Science and Technology of China [2011CB921703, 2013CB921700]
语种	英语
公开日期	2015-04-14
内容类型	期刊论文
源URL	[http://ir.iphy.ac.cn/handle/311004/59387]
专题	物理研究所_物理所公开发表论文_物理所公开发表论文_期刊论文
推荐引用方式 GB/T 7714	Xie, ZJ,He, SL,Chen, CY,et al. Orbital-selective spin texture and its manipulation in a topological insulator[J]. NATURE COMMUNICATIONS,2014,5.
APA	Xie, ZJ.,He, SL.,Chen, CY.,Feng, Y.,Yi, HM.,...&Zhou, XJ.(2014).Orbital-selective spin texture and its manipulation in a topological insulator.NATURE COMMUNICATIONS,5.
MLA	Xie, ZJ,et al."Orbital-selective spin texture and its manipulation in a topological insulator".NATURE COMMUNICATIONS 5(2014).