Antiferromagnetic and topological states in silicene: A mean field study

doi:10.1088/1674-1056/24/8/087503

IMECH-IR > 非线性力学国家重点实验室

	Antiferromagnetic and topological states in silicene: A mean field study
	Liu F(刘峰); Liu CC; Yao YG; Yao, YG (reprint author), Beijing Inst Technol, Sch Phys, Beijing 100081, Peoples R China.
发表期刊	CHINESE PHYSICS B
	2015-08
卷号	24 期号:8 页码:87503
ISSN	1674-1056
摘要	It has been widely accepted that silicene is a topological insulator, and its gap closes first and then opens again with increasing electric field, which indicates a topological phase transition from the quantum spin Hall state to the band insulator state. However, due to the relatively large atomic spacing of silicene, which reduces the bandwidth, the electron-electron interaction in this system is considerably strong and cannot be ignored. The Hubbard interaction, intrinsic spin orbital coupling (SOC), and electric field are taken into consideration in our tight-binding model, with which the phase diagram of silicene is carefully investigated on the mean field level. We have found that when the magnitudes of the two mass terms produced by the Hubbard interaction and electric potential are close to each other, the intrinsic SOC flips the sign of the mass term at either K or K' for one spin and leads to the emergence of the spin-polarized quantum anomalous Hall state.
关键词	Spin-polarized Quantum Anomalous Hall State Silicene Antiferromagnetic State
DOI	10.1088/1674-1056/24/8/087503
URL	查看原文
收录类别	SCI ; EI ; CSCD
语种	英语
WOS记录号	WOS:000361906000080
关键词[WOS]	BILAYER GRAPHENE ; HONEYCOMB LATTICE ; TRANSITION
WOS研究方向	Physics
WOS类目	Physics, Multidisciplinary
项目资助者	Project supported by the National Key Basic Research Program of China (Grant Nos. 2014CB920903, 2013CB921903, 2011CBA00108, and 2012CB937500), the National Natural Science Foundation of China (Grant Nos. 11021262, 11172303, 11404022, 11225418, and 11174337), the Specialized Research Fund for the Doctoral Program of Higher Education of China (Grant No. 20121101110046), the Excellent Young Scholars Research Fund of Beijing Institute of Technology (Grant No. 2014CX04028), and the Basic Research Funds of Beijing Institute of Technology (Grant No. 20141842001).
课题组名称	LNM固体物理力学
论文分区	二类/Q2
引用统计	被引频次：4[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://dspace.imech.ac.cn/handle/311007/58410
专题	非线性力学国家重点实验室
通讯作者	Yao, YG (reprint author), Beijing Inst Technol, Sch Phys, Beijing 100081, Peoples R China.
推荐引用方式 GB/T 7714	Liu F,Liu CC,Yao YG,et al. Antiferromagnetic and topological states in silicene: A mean field study[J]. CHINESE PHYSICS B,2015,24,8,:87503.
APA	Liu F,Liu CC,Yao YG,&Yao, YG .(2015).Antiferromagnetic and topological states in silicene: A mean field study.CHINESE PHYSICS B,24(8),87503.
MLA	Liu F,et al."Antiferromagnetic and topological states in silicene: A mean field study".CHINESE PHYSICS B 24.8(2015):87503.

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