Direct observation of the spin texture in SmB6 as evidence of the topological Kondo insulator

CORC > 物理研究所 > 物理所公开发表论文 > 期刊论文

	Direct observation of the spin texture in SmB6 as evidence of the topological Kondo insulator
	Xu, N ; Biswas, PK ; Dil, JH ; Dhaka, RS ; Landolt, G ; Muff, S ; Matt, CE ; Shi, X ; Plumb, NC ; Radovic, M ; Pomjakushina, E ; Conder, K ; Amato, A ; Borisenko, SV ; Yu, R ; Weng, HM ; Fang, Z ; Dai, X ; Mesot, J ; Ding, H ; Shi, M
刊名	NATURE COMMUNICATIONS
	2014
卷号	5
ISSN号	2041-1723
通讯作者	Xu, N (reprint author), Paul Scherrer Inst, Swiss Light Source, CH-5232 Villigen, Switzerland.
中文摘要	Topological Kondo insulators have been proposed as a new class of topological insulators in which non-trivial surface states reside in the bulk Kondo band gap at low temperature due to strong spin-orbit coupling. In contrast to other three-dimensional topological insulators, a topological Kondo insulator is truly bulk insulating. Furthermore, strong electron correlations are present in the system, which may interact with the novel topological phase. By applying spin- and angle-resolved photoemission spectroscopy, here we show that the surface states of SmB6 are spin polarized. The spin is locked to the crystal momentum, fulfilling time reversal and crystal symmetries. Our results provide strong evidence that SmB6 can host topological surface states in a bulk insulating gap stemming from the Kondo effect, which can serve as an ideal platform for investigating of the interplay between novel topological quantum states with emergent effects and competing orders induced by strongly correlated electrons.
资助信息	Sino-Swiss Science and Technology Cooperation [IZLCZ2138954]; Swiss National Science Foundation [200021-137783, PP00P2_144742]; MOST [2010CB923000]; NSFC
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/311004/59384]
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	Xu, N,Biswas, PK,Dil, JH,et al. Direct observation of the spin texture in SmB6 as evidence of the topological Kondo insulator[J]. NATURE COMMUNICATIONS,2014,5.
APA	Xu, N.,Biswas, PK.,Dil, JH.,Dhaka, RS.,Landolt, G.,...&Shi, M.(2014).Direct observation of the spin texture in SmB6 as evidence of the topological Kondo insulator.NATURE COMMUNICATIONS,5.
MLA	Xu, N,et al."Direct observation of the spin texture in SmB6 as evidence of the topological Kondo insulator".NATURE COMMUNICATIONS 5(2014).