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A possible unified picture for both scaling and non-scaling plateau-to-plateau transitions in quantum Hall systems

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Published 13 May 2008 • Europhysics Letters Association
, , Citation Gang Xiong et al 2008 EPL 82 47008 DOI 10.1209/0295-5075/82/47008

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Author affiliations

1 Physics Department, Beijing Normal University - Beijing 100875, PRC

2 Physics Department, The Hong Kong University of Science and Technology - Clear Water Bay, Hong Kong SAR, China

3 Physics Department, The University of Texas at Austin - Austin, TX 78712-1081, USA

4 International Center for Quantum Structures, Institute of Physics, Chinese Academy of Sciences Beijing 100080, PRC

Dates

  1. Received 2 January 2008
  2. Accepted 1 April 2008
  3. Published
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0295-5075/82/4/47008

Abstract

The effect of the inter-Landau-band overlap on electron localization in integer quantum Hall systems is studied. A narrow band of extended electronic states is formed near each Landau band center due to interband mixing. However, these bands are greatly modified by the degree of interband overlap. The width of an extended-state band goes to zero when the interband overlap is below a critical value. This leads to a possible unified explanation to both scaling and non-scaling experimental results on plateau-to-plateau transitions.

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10.1209/0295-5075/82/47008