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Title: Kosterlitz-Thouless type metal- insulator transition of 2D electron gas in a random magnetic field
Authors: Xie, X. C.
Wang, Xiang-Rong
Liu, D. Z.
Keywords: Two-dimensional electron gas
Random magnetic field
Kosterlitz-Thouless type metal-insulator transition
Issue Date: Apr-1998
Citation: Physical review letters, v. 80, p. 3563, 1998
Abstract: We study the localization property of two-dimensional electron gas in the presence of a random magnetic field. The localization length is directly calculated using a transfer matrix technique and finite size scaling analysis. We show strong numerical evidence that the system undergoes a disorder driven Kosterlitz-Thouless type metal-insulator transition. We develop a mean field theory which maps the random field system into a two-dimensional XY model. The vortex and antivortex excitations in the XY model correspond to two different kinds of magnetic domains in the random field system.
Rights: Physical Review Letters © copyright 1998 American Physical Society. The Journal's web site is located at
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