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Pis'ma v Zhurnal Èksperimental'noi i Teoreticheskoi Fiziki, 2012, Volume 96, Issue 3, Pages 205–216 (Mi jetpl3198)  

This article is cited in 13 scientific papers (total in 13 papers)

SCIENTIFIC SUMMARIES

Microscopic theory of a strongly correlated two-dimensional electron

M. V. Zverevab, V. A. Khodelac, S. S. Pankratova

a National Research Centre "Kurchatov Institute"
b Moscow Institute of Physics and Technology
c McDonnell Center for the Space Sciences, Washington University in St. Louis
References:
Abstract: The rearrangement of the Fermi surface in a diluted two-dimensional electron gas beyond the topological quantum critical point has been examined within an approach based on the Landau theory of Fermi liquid and a nonperturbative functional method. The possibility of a transition of the first order in the coupling constant at zero temperature between the states with a three-sheet Fermi surface and a transition of the first order in temperature between these states at a fixed coupling constant has been shown. It has also been shown that a topological crossover, which is associated with the joining of two sheets of the Fermi surface and is characterized by the maxima of the density of states $\mathcal N(T)$ and ratio $C(T)/T$ of the specific heat to the temperature, occurs at a very low temperature $T_{\diamond}$ determined by the structure of a state with the three-sheet Fermi surface. A momentum region where the distribution $n(p, T)$ depends slightly on the temperature, which is manifested in the maximum of the specific heat $C(T)$ near $T_*$, appears through a crossover at temperatures $T\sim T_*>T_{\diamond}$. It has been shown that the flattening of the single-particle spectrum of the strongly correlated two-dimensional electron gas results in the crossover from the Fermi liquid behavior to a non-Fermi liquid one with the density of states $\mathcal N(T)\propto T^{-\alpha}$ with the exponent $\alpha\simeq 2/3$.
Received: 02.07.2012
English version:
Journal of Experimental and Theoretical Physics Letters, 2012, Volume 96, Issue 3, Pages 192–202
DOI: https://doi.org/10.1134/S0021364012150131
Bibliographic databases:
Document Type: Article
Language: Russian
Citation: M. V. Zverev, V. A. Khodel, S. S. Pankratov, “Microscopic theory of a strongly correlated two-dimensional electron”, Pis'ma v Zh. Èksper. Teoret. Fiz., 96:3 (2012), 205–216; JETP Letters, 96:3 (2012), 192–202
Citation in format AMSBIB
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\paper Microscopic theory of a strongly correlated two-dimensional electron
\jour Pis'ma v Zh. \`Eksper. Teoret. Fiz.
\yr 2012
\vol 96
\issue 3
\pages 205--216
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\jour JETP Letters
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  • https://www.mathnet.ru/eng/jetpl/v96/i3/p205
  • This publication is cited in the following 13 articles:
    Citing articles in Google Scholar: Russian citations, English citations
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