Electron correlations and single-particle physics in the Integer Quantum Hall Effect
Mesoscale and Nanoscale Physics
2007-05-23 v2
Abstract
The compressibility of a two-dimensional electron system with spin in a spatially correlated random potential and a quantizing magnetic field is investigated. Electron-electron interaction is treated with the Hartree-Fock method. Numerical results for the influences of interaction and disorder on the compressibility as a function of the particle density and the strength of the magnetic field are presented. Localization-delocalization transitions associated with highly compressible region in the energy spectrum are found at half-integer filling factors. Coulomb blockade effects are found near integer fillings in the regions of low compressibility. Results are compared with recent experiments.
Cite
@article{arxiv.cond-mat/0502095,
title = {Electron correlations and single-particle physics in the Integer Quantum Hall Effect},
author = {Alexander Struck and Bernhard Kramer},
journal= {arXiv preprint arXiv:cond-mat/0502095},
year = {2007}
}
Comments
4 pages, 2 figures, replaced with revised version