Diffusion quantum Monte Carlo calculation of the quasiparticle effective mass of the two-dimensional homogeneous electron gas

Drummond, Neil and Needs, R. J. (2013) Diffusion quantum Monte Carlo calculation of the quasiparticle effective mass of the two-dimensional homogeneous electron gas. Physical review B, 87 (4). ISSN 1550-235X

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Abstract

The quasiparticle effective mass is a key quantity in the physics of electron gases, describing the renormalization of the electron mass due to electron-electron interactions. Two-dimensional electron gases are of fundamental importance in semiconductor physics, and there have been numerous experimental and theoretical attempts to determine the quasiparticle effective mass in these systems. In this work we report quantum Monte Carlo results for the quasiparticle effective mass of a two-dimensional homogeneous electron gas. Our calculations differ from previous quantum Monte Carlo work in that much smaller statistical error bars have been achieved, allowing for an improved treatment of finite-size effects. In some cases we have also been able to use larger system sizes than previous calculations.

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: 63289
Deposited By: ep_importer_pure
Deposited On: 08 Apr 2013 15:55
Refereed?: Yes
Published?: Published
Last Modified: 22 Feb 2020 02:10
URI: https://eprints.lancs.ac.uk/id/eprint/63289

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