No indications of metal-insulator transition for systems of interacting electrons in two dimensions

Details No indications of metal-insulator transition for systems of interacting electrons in two dimensions No indications of metal-insulator transition for systems of interacting electrons in two dimensions

2000-12-06

arxiv.org/abs/cond-mat/0012075v1

Phys. Rev. B 63, 085102 (2001)

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

4 pages, 4 figures, accepted for publication in PRB

Scientific paper

10.1103/PhysRevB.63.085102

The influence of Coulomb interaction on transport properties of spinless electrons in small disordered two dimensional systems is studied within a tight binding model. Spatial correlations, inverse participation ratio, and multifractal spectrum of the zero temperature local tunneling amplitude as well as the DC Kubo conductance are traced as function of the interaction strength $U$. When $U$ is increased, all of the above quantities are shifted rather smoothly towards localized behavior, indicating the absence of an interaction driven insulator-metal transition.

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