Thermodynamic and tunneling density of states of the integer quantum Hall critical state

S. R. Eric Yang, Ziqiang Wang, A. H. MacDonald, A. H. MacDonald

Research output: Contribution to journalArticle

10 Citations (Scopus)

Abstract

We examine the long wavelength limit of the self-consistent Hartree-Fock approximation irreducible static density-density response function by evaluating the charge induced by an external charge. Our results are consistent with the compressibility sum rule and inconsistent with earlier work that did not account for consistency between the exchange local field and the disorder potential. We conclude that the thermodynamic density of states is finite, in spite of the vanishing tunneling density of states at the critical energy of the integer quantum Hall transition.

Original languageEnglish
Article number041302
Pages (from-to)413021-413024
Number of pages4
JournalPhysical Review B - Condensed Matter and Materials Physics
Volume65
Issue number4
DOIs
Publication statusPublished - 2002 Jan 15

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

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