Electron effective mass in the strongly correlated two-dimensional uniform electron fluid from finite-temperature calculations

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DOIResolve DOI: http://doi.org/10.1103/PhysRevB.84.155302
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TypeArticle
Journal titlePhysical Review B - Condensed Matter and Materials Physics
ISSN1098-0121
Volume84
Issue15
Article number155302
AbstractThe very low-temperature thermal effective mass m* of para- and ferromagnetic electrons in a uniform two-dimensional (2D) layer is studied. Analytical and numerical results are used to define a partially regularized m* valid to logarithmic accuracy in the sense of Landau for the Hartree-Fock (H-F) approximation. The resulting H-F m * decreases linearly with the electron-disk radius r s. The effective mass including correlation is calculated via a physically transparent formula that uses a classical map of the 2D pair-distribution function (PDF) and the finite-T exchange-correlation free energy Fxc(T). The T=0 PDFs of Gori-Giorgi and a quantum analog of the potential of mean-force used in the statistical mechanics of classical fluids are invoked. Our results for m* fall well within the results from recent quantum Monte Carlo simulations at T=0, and other results, none of them being a finite-T approach. Published by the American Physical Society.
Publication date
LanguageEnglish
AffiliationNational Research Council Canada (NRC-CNRC)
Peer reviewedYes
NPARC number21271619
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Record identifier035d2fd0-d045-4249-955a-76416e2b798e
Record created2014-03-24
Record modified2016-05-09
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