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American Physical Society, Physical Review B (Condensed Matter), 3(50), p. 1684-1694, 1994

DOI: 10.1103/physrevb.50.1684

American Physical Society, Physical review B, 3(88)

DOI: 10.1103/physrevb.88.035133

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Quantum Monte Carlo calculation of the Fermi-liquid parameters in the two-dimensional electron gas

Journal article published in 1994 by Yongkyung Kwon, Dm M. Ceperley ORCID, Richard M. Martin
This paper is made freely available by the publisher.
This paper is made freely available by the publisher.

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Abstract

Fermi liquid theory is the basic paradigm within which we understand the normal behavior of interacting electron systems, but quantitative values for the parameters that occur in this theory are currently unknown in many important cases. One such case is the two-dimensional homogeneous electron gas (2D HEG), which is realized in a wide variety of semiconductor devices. We have used quantum Monte Carlo (QMC) methods to calculate the Landau interaction functions between pairs of quasiparticles. We use these to study the Fermi liquid parameters, finding that finite-size effects represent a serious obstacle to the direct determination of Fermi liquid parameters in QMC calculations. We have used QMC data in the literature for other properties of the 2D HEG to assemble a set of "best available" values for the Fermi liquid parameters. ; Comment: 11 pages