Weak levitation of 2D delocalized states in a magnetic field.

Preprint

15 February 1995

preprint
Published by arXiv in arXiv

https://doi.org/10.48550/arXiv.cond-mat/9502059

Abstract

The deviation of the energy position of a delocalized state from the center of Landau level is studied in the framework of the Chalker-Coddington model. It is demonstrated that introducing a weak Landau level mixing results in a shift of the delocalized state up 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

DELOCALIZED STATE
WEAK LEVITATION
MAGNETIC FIELD
2D DELOCALIZED
SADDLE POINTS
LANDAU LEVEL
TUNNELING

All Related Versions

Version 1, 1995-02-15, ArXiv
Published version: Physical Review Letters, 75 (2), 304.

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