Correlation energy of a two-dimensional electron gas

Lenac, Z. and Šunjić, Marijan (1994) Correlation energy of a two-dimensional electron gas. Physical Review B, 50 (15). pp. 10792-10795. ISSN 1098-0121

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Extending the Hedin-Lundqvist approximation, originally developed for the three-dimensional electron gas, we derive the correlation energy Ec for the two-dimensional electron gas as a function of electron density ρ. A simple two-parameter function Ec(ρ) reproduces very well the first-principles numerical results in the whole density range. We also present a simple and accurate form of the correlation part of the chemical potential, which can be used, e.g., as a correlation part of the effective potential in the local-density approximation for two-dimensional electron systems.

Item Type: Article
Date: October 1994
Subjects: NATURAL SCIENCES > Physics
Additional Information: Copyright (1994) by the American Physical Society.
Divisions: Faculty of Science > Department of Physics
Publisher: American Physical Society
Depositing User: Gordana Stubičan Ladešić
Date Deposited: 27 Aug 2014 12:44
Last Modified: 27 Aug 2014 12:44

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