Weak Levitation of 2D Delocalized States in a Magnetic Field
- 10 July 1995
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review Letters
- Vol. 75 (2) , 304-307
- https://doi.org/10.1103/physrevlett.75.304
Abstract
The deviation of the energy position of a delocalized state from the center of a Landau level is studied in the framework of the Chalker-Coddington model. It is demonstrated that the introduction of weak Landau level mixing results in an upward shift of the delocalized state in energy. The mechanism of a levitation is a neighboring-Landau-level-assisted resonant tunneling which “shunts” the saddle points. The magnitude of levitation is shown to be independent of the Landau level number.Keywords
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