Localization in one- and two-dimensional quantum coulomb glasses

Gun Sang Jeon, Seongho Wu, H. W. Lee, M. Y. Choi

Research output: Contribution to journalArticlepeer-review

10 Scopus citations


We study properties of the one- and two-dimensional quantum Coulomb glasses, with particular attention to the effects of the electron-electron interaction on the localization. The Hartree-Fock calculation reveals that the interaction reduces the single-particle density of states and enhances the localization near the Fermi energy. It is also found that the energy range, in which the interaction enhances the localization, broadens with the increasing hopping strength. The validity of the Hartree-Fock approximation is checked via detailed comparison with the exact diagonalization results. In particular we introduce a generalized inverse participation number, which gives a good description of the localization in an interacting system.

Original languageEnglish
Pages (from-to)3033-3039
Number of pages7
JournalPhysical Review B - Condensed Matter and Materials Physics
Issue number4
StatePublished - 1999


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