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

Frank Kuehnel·Leonid P. Pryadko·M. I. Dykman
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Abstract

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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Frank Kuehnel, Leonid P. Pryadko, M. I. Dykman. 2000-01-30. Low-frequency peak in the magnetoconductivity of a non-degenerate 2D electron liquid. https://arxiv.org/abs/cond-mat/0001427

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