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Author Sheng, D. N. ♦ Weng, Z. Y.
Source United States Department of Energy Office of Scientific and Technical Information
Content type Text
Language English
Subject Keyword PHYSICS ♦ ELECTRON GAS ♦ L-S COUPLING ♦ MAGNETIC FIELDS ♦ WAVE FUNCTIONS ♦ T INVARIANCE ♦ TOPOLOGY ♦ PHASE DIAGRAMS ♦ LOCALIZED STATES ♦ METAL-INSULATOR TRANSFORMATIONS ♦ TIGHT BINDING APPROXIMATION
Abstract We show that wave functions in a two-dimensional (2D) electron system with spin-orbit coupling can be characterized by a topological quantity{emdash}the Chern integer due to the existence of the intrinsic Kramers degeneracy. The localization-delocalization transition in such a system is studied in terms of such a Chern number description, which reproduces the known metal-insulator transition point. The present work suggests a unified picture for various known 2D delocalization phenomena based on the same topological characterization. {copyright} {ital 1996 The American Physical Society.}
ISSN 01631829
Educational Use Research
Learning Resource Type Article
Publisher Date 1996-10-01
Publisher Place United States
Journal Physical Review, B: Condensed Matter
Volume Number 54
Issue Number 16


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