Weak levitation of delocalized states as a result of Landau level mixing

Weak levitation of delocalized states as a result of Landau level mixing

We study the effect of Landau level mixing on the energy positions of 2D delocalized states in a magnetic field. We show that a weak mixing can be incorporated into the Chalker-Coddington model by renormalization of parameters of the saddle-points. We demonstrate that after averaging over saddle-poi...

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Bibliographic Details
Published in:Surface science Vol. 361; pp. 922 - 924
Main Authors: Shahbazyan, T.V., Raikh, M.E.
Format: Journal Article
Language:English
Published: Elsevier B.V 01-01-1996
Subjects:
Hall effect
Quantum effects
Quantum effects
Hall effect
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Summary:We study the effect of Landau level mixing on the energy positions of 2D delocalized states in a magnetic field. We show that a weak mixing can be incorporated into the Chalker-Coddington model by renormalization of parameters of the saddle-points. We demonstrate that after averaging over saddle-points, such a renormalization leads to floating of delocalized states upwards from the centers of Landau bands.
ISSN:0039-6028
1879-2758
DOI:10.1016/0039-6028(96)00565-1