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Electron correlations and single-particle physics in the Integer Quantum Hall Effect

Alexander Struck·Bernhard Kramer
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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.

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Alexander Struck, Bernhard Kramer. 2006-09-06. Electron correlations and single-particle physics in the Integer Quantum Hall Effect. https://doi.org/10.1103/physrevlett.97.106801

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