Detecting zero-line mode in bilayer graphene via the quantum Hall effect

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	Detecting zero-line mode in bilayer graphene via the quantum Hall effect
	Zhang, YT ; Qiao, ZH ; Sun, QF
刊名	PHYSICAL REVIEW B
	2013
卷号	87 期号:23
ISSN号	1098-0121
通讯作者	Zhang, YT (reprint author), Hebei Normal Univ, Coll Phys, Shijiazhuang 050016, Peoples R China.
中文摘要	The zero-line mode can be produced in AB-stacking bilayer graphene under a spatially varying electric field. We investigate the transport properties of the zero-line mode in a six-terminal Hall bar system in the presence of a uniform magnetic field. We find that the Hall resistance is zero and the longitudinal resistance exhibits a plateau with 1/2(h/2e(2)), when the Fermi level lies between the lowest conduction and highest valence Landau levels, which corresponds to the zero-line modes. Since the zero-line mode propagates along the domain wall separating opposite valley-Hall topologies, we also numerically measure the currents between source and drain and the conductance between two of the transversal terminals. Our finding shows that the current between source and drain is due to the existence of kink state, which can serve as a scheme to detect the zero-line mode. We further show that the zero-line mode under strong magnetic field is robust against disorders.
资助信息	NSF-China [11004046, 11274364, 11174252]; Natural Science Foundation of Hebei Province of China [A2010000339, A2012205071]; DOE (Division of Materials Science and Engineering) [DEFG03-02ER45958]
语种	英语
公开日期	2014-01-16
内容类型	期刊论文
源URL	[http://ir.iphy.ac.cn/handle/311004/56878]
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	Zhang, YT,Qiao, ZH,Sun, QF. Detecting zero-line mode in bilayer graphene via the quantum Hall effect[J]. PHYSICAL REVIEW B,2013,87(23).
APA	Zhang, YT,Qiao, ZH,&Sun, QF.(2013).Detecting zero-line mode in bilayer graphene via the quantum Hall effect.PHYSICAL REVIEW B,87(23).
MLA	Zhang, YT,et al."Detecting zero-line mode in bilayer graphene via the quantum Hall effect".PHYSICAL REVIEW B 87.23(2013).