Quantum plateaus in dynamical Hall conductivity
arXiv:1812.00603 · doi:10.1016/j.physe.2019.03.007
Abstract
Dynamical Hall conductivity σ_H(ω) of a 2D electron gas with impurities in the perpendicular magnetic field is analyzed. Plateau-like behavior at low frequencies as well as at high frequencies provided the complete filling of Landau levels is predicted. The broadening of a Landau level separates two frequency regions with different behaviour. Imaginary part of dynamical Hall conductivity reveals oscillations in the localized states region. Comparison with the experiment is carried out.
12pages, 1figure
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