Landau level mixing and levitation of extended states in two dimensions

F. D.M. Haldane, Kun Yang

Research output: Contribution to journalArticlepeer-review

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Abstract

We study the effects of mixing of different Landau levels on the energies of one-body states, in the presence of a strong uniform magnetic field and a random potential in two dimensions. We use a perturbative approach and develop a systematic expansion in both the strength and smoothness of the random potential. We find the energies of the extended states shift upward, and the amount of levitation is proportional to (n + 1/2)/B3 for strong magnetic field, where B is the magnetic field strength and n is the Landau level index.

Original languageEnglish (US)
Pages (from-to)298-301
Number of pages4
JournalPhysical review letters
Volume78
Issue number2
DOIs
StatePublished - Jan 13 1997

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy(all)

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