Abelian and non-Abelian anyons in integer quantum anomalous Hall effect and topological phase transitions via superconducting proximity effect

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	Abelian and non-Abelian anyons in integer quantum anomalous Hall effect and topological phase transitions via superconducting proximity effect
	Yu, Y
刊名	PHYSICAL REVIEW B
	2011
卷号	83 期号:12 页码:125105
关键词	INSULATORS PARITY NU=1/2 STATES WELLS
ISSN号	1098-0121
通讯作者	Yu, Y (reprint author), Chinese Acad Sci, Inst Theoret Phys, POB 2735, Beijing 100190, Peoples R China.
英文摘要	We study the quantum anomalous Hall effect described by a class of two-component Haldane models on square lattices. We show that the latter can be transformed into a pseudospin triplet p + ip-wave paired superfluid. In the long wavelength limit, the ground-statewave function is described by Halperin's ( 1,1,-1) state of neutral fermions analogous to the double-layer quantum Hall effect. The vortex excitations are charge e/2 Abelian anyons which carry a neutral Dirac fermion zero mode. The superconducting proximity effect induces "tunneling" between "layers" which leads to topological phase transitions whereby the Dirac fermion zero mode fractionalizes and Majorana fermions emerge in the edge states. The charge e/2 vortex excitation carrying a Majorana zero mode is a non-Abelian anyon. The proximity effect can also drive a conventional insulator into a quantum anomalous Hall effect state with a Majorana edge mode and the non-Abelian vortex excitations.
学科主题	Physics
收录类别	SCI
资助信息	National Natural Science Foundation of China; MOST of China; Key Lab of Frontiers in Theoretical Physics of CAS; DOE [DE-FG02-99ER45747, DE-FG02-04ER46124]; NSF [DMR-0704545]
原文出处	http://dx.doi.org/10.1103/PhysRevB.83.125105
语种	英语
WOS记录号	WOS:000288532400001
公开日期	2013-05-17
内容类型	期刊论文
源URL	[http://ir.itp.ac.cn/handle/311006/14391]
专题	理论物理研究所_理论物理所1978-2010年知识产出
推荐引用方式 GB/T 7714	Yu, Y. Abelian and non-Abelian anyons in integer quantum anomalous Hall effect and topological phase transitions via superconducting proximity effect[J]. PHYSICAL REVIEW B,2011,83(12):125105.
APA	Yu, Y.(2011).Abelian and non-Abelian anyons in integer quantum anomalous Hall effect and topological phase transitions via superconducting proximity effect.PHYSICAL REVIEW B,83(12),125105.
MLA	Yu, Y."Abelian and non-Abelian anyons in integer quantum anomalous Hall effect and topological phase transitions via superconducting proximity effect".PHYSICAL REVIEW B 83.12(2011):125105.