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Integer quantum Hall effect of interacting electrons: dynamical scaling and critical conductivity
Bodo Huckestein, Michael Backhaus
Published 1998-07-03, updated 1999-06-06Version 2
We report on a study of interaction effects on the polarization of a disordered two-dimensional electron system in a strong magnetic field. Treating the Coulomb interaction within the time-dependent Hartree-Fock approximation we find numerical evidence for dynamical scaling with a dynamical critical exponent z=1 at the integer quantum Hall plateau transition in the lowest Landau level. Within the numerical accuracy of our data the conductivity at the transition and the anomalous diffusion exponent are given by the values for non-interacting electrons, independent of the strength of the interaction.
Comments: Minor changes. Final version to be published in Phys. Rev. Lett. June 28
Journal: Phys. Rev. Lett. 82, 5100-5103 (1999)
Categories: cond-mat.mes-hall, cond-mat.dis-nn
Keywords: integer quantum hall effect, interacting electrons, critical conductivity, dynamical scaling, integer quantum hall plateau transition
Tags: journal article
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