Spin-polarized current state of electrons in bilayer graphene

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	Spin-polarized current state of electrons in bilayer graphene
	Yan, XZ ; Ting, CS
刊名	PHYSICAL REVIEW B
	2014
卷号	89 期号:20
ISSN号	1098-0121
通讯作者	Yan, XZ (reprint author), Chinese Acad Sci, Inst Phys, POB 603, Beijing 100190, Peoples R China.
中文摘要	We propose a model of spin-polarized current state for electrons in bilayer graphene. The model resolves the puzzles as revealed by experiments that (a) the energy gap E-gap of the insulating ground state at the charge neutrality point (CNP) can be closed by a perpendicular electric field of either polarity, (b) E-gap increases significantly with increasing the magnetic field B, (c) the particle-hole spectrum is asymmetric in the presence of B, (d) there is a peak structure in the electric conductivity at small B at the CNP, and (e) there are quantum Hall states stemming from lifting of degeneracy in the lowest Landau level. The model predicts that the ground state of the system close to the CNP is a ferrimagnet at finite B and the Hall current is spin polarized.
资助信息	National Basic Research 973 Program of China [2011CB932700, 2012CB932302]; Robert A. Welch Foundation [E-1146]
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/311004/59542]
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	Yan, XZ,Ting, CS. Spin-polarized current state of electrons in bilayer graphene[J]. PHYSICAL REVIEW B,2014,89(20).
APA	Yan, XZ,&Ting, CS.(2014).Spin-polarized current state of electrons in bilayer graphene.PHYSICAL REVIEW B,89(20).
MLA	Yan, XZ,et al."Spin-polarized current state of electrons in bilayer graphene".PHYSICAL REVIEW B 89.20(2014).