HKUST Library Institutional Repository Banner

HKUST Institutional Repository >
Physics >
PHYS Journal/Magazine Articles >

Please use this identifier to cite or link to this item: http://hdl.handle.net/1783.1/1865
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 http://prl.aps.org
URI: http://hdl.handle.net/1783.1/1865
Appears in Collections:PHYS Journal/Magazine Articles

Files in This Item:

File Description SizeFormat
article6.pdfpre-published version216KbAdobe PDFView/Open

Find published version via OpenURL Link Resolver

All items in this Repository are protected by copyright, with all rights reserved.