Frequency dependent transport in the integer quantum Hall effect

2001/02/23 by A. Bäker, L. Schweitzer
Physics and Astronomy · #cond-mat.mes-hall

paper · pdf

published as Proc. 25th Int. Conf. Phys. Semicond., Osaka 2000, Springer Proceedings in Physics 87, 975, 2001. · 2 pages incl. 3 eps-figures. Proceedings of the ICPS 25, Osaka, 17-22 September 2000

arxiv created 2001/02/23 · arxiv updated 2009/11/30

Abstract

The frequency dependent transport is investigated for a two-dimensional disordered system under QHE conditions. The real and imaginary parts of the conductivity are calculated numerically in linear response using a recursive Green function technique. The energy dependence of σ_xx(E,ω) is obtained within the lowest Landau band. When the width of the system exceeds the characteristic length, L_ω=(ℏωρ(E))^-1/2, the maximum of the real part of σ_xx(E,ω) decays with frequency almost linearly which is different from the classical Drude behaviour.

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