The anisotropic conductivity of two-dimensional electrons on a half-filled high Landau level
I. S. Burmistrov
L.D. Landau Institute for Theoretical Physics RAS, 117940 Moscow, Russia
Institute for Theoretical Physics, University of Amsterdam, 1018 XE Amsterdam, The Netherlands
PACS: 72.10.-d, 73.20.Dx, 73.40.Hm
We study the conductivity of two-dimensional interacting
electrons on the half-filled Nth Landau level with in
the presence of the quenched disorder. The existence of the
unidirectional charge-density wave state at temperature T<Tc,
where Tc is the transition temperature, leads to the
anisotropic conductivity tensor. We find that the leading
anisotropic corrections are proportional to (Tc-T)/Tc just
below the transition in accordance with the experimental findings.
Above Tc the correlations corresponding to the unidirectional
charge-density wave state below Tc result in the corrections to
the conductivity proportional to .