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Phenomenological understanding of a transport regime with reflection symmetry in the quantum Hall system in a composite-fermion picture
Zheng, WJ; Yu, Y; Su, ZB; Zheng, WJ , Chinese Acad Sci, Inst Theoret Phys, Beijing 100080, Peoples R China.
1998
发表期刊PHYSICAL REVIEW B
ISSN1098-0121
卷号58期号:11页码:6740-6743
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.
部门归属Chinese Acad Sci, Inst Theoret Phys, Beijing 100080, Peoples R China
关键词Insulator-transition Phase-transitions Magnetic-fields Liquid Conductivity
学科领域Physics
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收录类别SCI
WOS记录号WOS:000076058800018
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文献类型期刊论文
条目标识符http://ir.itp.ac.cn/handle/311006/12267
专题理论物理所1978-2010年知识产出
通讯作者Zheng, WJ , Chinese Acad Sci, Inst Theoret Phys, Beijing 100080, Peoples R China.
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Zheng, WJ,Yu, Y,Su, ZB,et al. 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.
APA Zheng, WJ,Yu, Y,Su, ZB,&Zheng, WJ , Chinese Acad Sci, Inst Theoret Phys, Beijing 100080, Peoples R China..(1998).Phenomenological understanding of a transport regime with reflection symmetry in the quantum Hall system in a composite-fermion picture.PHYSICAL REVIEW B,58(11),6740-6743.
MLA Zheng, WJ,et al."Phenomenological understanding of a transport regime with reflection symmetry in the quantum Hall system in a composite-fermion picture".PHYSICAL REVIEW B 58.11(1998):6740-6743.
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