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

Drummond, N. D. and Needs, R. J. (2013) Quantum Monte Carlo calculation of the Fermi liquid parameters of the two-dimensional homogeneous electron gas. Physical review B, 88 (3). ISSN 1098-0121

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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.

Item Type: Journal Article
Journal or Publication Title: Physical review B
Additional Information: ©2013 American Physical Society
Departments: Faculty of Science and Technology > Physics
ID Code: 67161
Deposited By: ep_importer_pure
Deposited On: 14 Oct 2013 08:02
Refereed?: Yes
Published?: Published
Last Modified: 28 Feb 2020 01:54
URI: https://eprints.lancs.ac.uk/id/eprint/67161

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