Abstract

We investigate the influence of electron-electron interactions on the conductance of two-dimensional disordered spinless electrons. We present an efficient numerical method based on diagonalization in a truncated basis of Hartree-Fock states to determine with high accuracy the low-energy properties in the entire parameter space. We find that weak interactions increase the dc conductance in the strongly localized regime while they decrease the dc conductance for weak disorder. Strong interactions always decrease the conductance. We also study the localization of single-particle excitations at the Fermi energy which turns out to be only weakly influenced by the interactions.

Department(s)

Physics

Keywords and Phrases

Approximation theory; Computer simulation; Electric conductance; Electric conductivity; Electron transitions; Fermi level; Kinetic theory; Mathematical models; Monte Carlo methods; Numerical methods; Probability distributions; Two dimensional; Coulomb interaction; Electron electron interactions; Hartree-Fock diagonalization

International Standard Serial Number (ISSN)

0031-9007

Document Type

Article - Journal

Document Version

Final Version

File Type

text

Language(s)

English

Rights

© 1998 American Physical Society (APS), All rights reserved.

Included in

Physics Commons

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