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题名: Phenomenological understanding of a transport regime with reflection symmetry in the quantum Hall system in a composite-fermion picture
作者: Zheng, WJ ;  Yu, Y ;  Su, ZB
刊名: PHYSICAL REVIEW B
出版日期: 1998
卷号: 58, 期号:11, 页码:6740-6743
关键词: INSULATOR-TRANSITION ;  PHASE-TRANSITIONS ;  MAGNETIC-FIELDS ;  LIQUID ;  CONDUCTIVITY
学科分类: Physics
通讯作者: Zheng, WJ , Chinese Acad Sci, Inst Theoret Phys, Beijing 100080, Peoples R China.
部门归属: Chinese Acad Sci, Inst Theoret Phys, Beijing 100080, Peoples R China
英文摘要: In this paper, we present a phenomenological picture based on the composite fermion theory, in response to the recent discovery by Shahar et al. [Science 274, 589 (1996)] of a transport regime near the transition from a v=1 quantum Hall liquid to a Hall insulator. In this picture, the seemingly unexpected reflection symmetry in the longitudinal resistivity rho(xx) can be understood clearly as due to the symmetry of the gap excitations which dominate sigma(xx) across the transition, and the abrupt change in sigma(xy) at the transition. The parameter alpha in the linear fit of v(0)(T) of Shahar et al. is also given a simple physical meaning, and the effective mass can be calculated from alpha, which gives a reasonable value of several-electron band mass. When taking into account the result of network model, the almost invariant Hall resistivity rho(xy) across the transition is also well understood.
收录类别: SCI
原文出处: 查看原文
WOS记录号: WOS:000076058800018
Citation statistics: 
内容类型: 期刊论文
URI标识: http://ir.itp.ac.cn/handle/311006/12267
Appears in Collections:理论物理所1978-2010年知识产出_期刊论文

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Recommended Citation:
Zheng, WJ,Yu, Y,Su, ZB. Phenomenological understanding of a transport regime with reflection symmetry in the quantum Hall system in a composite-fermion picture[J]. PHYSICAL REVIEW B,1998,58(11):6740-6743.
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