Magnetoresistance study for systems of interacting electrons in two dimensions

Jan W. Kantelhardt, Richard Berkovits and Yshai Avishai

Physica A: Statistical Mechanics and its Applications, 2001, vol. 302, issue 1, 359-367

Abstract: The influence of Coulomb interaction and weak perpendicular magnetic field on the transport properties of spinless electrons in small disordered two dimensional systems is studied within a tight binding model. We trace the participation ratio of the renormalized zero-temperature tunneling amplitude as function of interaction strength U and magnetic field H, and find typical negative magnetoresistance for small disorder, while the behavior is more complicated for stronger disorder. The results suggest an effective weakening of the magnetic field for stronger Coulomb interaction in agreement with previous results for quantum dots.

Keywords: Weak localization; Magnetoresistance; Coulomb interaction; Tunneling amplitude; Exact diagonalization (search for similar items in EconPapers)
Date: 2001
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Persistent link: https://EconPapers.repec.org/RePEc:eee:phsmap:v:302:y:2001:i:1:p:359-367

DOI: 10.1016/S0378-4371(01)00454-X

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