Low-frequency peak in the magnetoconductivity of a non-degenerate 2D electron liquid

Details Low-frequency peak in the magnetoconductivity of a non-degenerate 2D electron liquid Low-frequency peak in the magnetoconductivity of a non-degenerate 2D electron liquid

2000-01-29

arxiv.org/abs/cond-mat/0001427v2

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

RevTeX 3.0, 4 pages, 1 eps figure

Scientific paper

We study the frequency-dependent magnetoconductivity of a strongly correlated nondegenerate 2D electron system in a quantizing magnetic field. We first restore the single-electron conductivity from calculated 14 spectral moments. It has a maximum for omega ~ gamma (hbar gamma is the disorder-induced width of the Landau level), and scales as a power of omega for omega ->0, with a universal exponent. Even for strong coupling to scatterers, the electron-electron interaction modifies the conductivity for low and high frequencies, and gives rise to a nonzero static conductivity. We analyze the full many-electron conductivity, and discuss the experiment.

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