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Non-Fermi-Liquid Behavior of Compressible States of Electrons on the Lowest Landau Level

D. V. Khveshchenko
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Abstract

Experiments show that at even denominator fractions (EDFs) ($ν=1/2, 3/4, 3/2$,...) the two-dimensional electron gas in a strong magnetic field becomes compressible, has no energy gap, and demonstrates the presence of an ostensible Fermi surface. Since this phenomenon results from a minimization of the interaction, rather than the kinetic energy, the EDF states might well exhibit deviations from a conventional Fermi liquid. We show that impurity scattering at EDFs and its interference with electron-electron and electron-phonon interactions provide examples of intrinsically non-Fermi-liquid transport.

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D. V. Khveshchenko. 1996-12-17. Non-Fermi-Liquid Behavior of Compressible States of Electrons on the Lowest Landau Level. https://doi.org/10.1007/s002570050373

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