Exchange-correlation energy of a hole gas including valence band coupling
1997 (English)In: Physical Review B Condensed Matter, ISSN 0163-1829, E-ISSN 1095-3795, Vol. 56, no 7, 3664-3671 p.Article in journal (Refereed) Published
We have calculated an accurate exchange-correlation energy of a hole gas, including the complexities related to the valence band coupling as occurring in semiconductors like GaAs, but excluding the band warping. A parametrization for the dependence on the density and the ratio between light-and heavy-hole masses is given. We apply our results to a hole gas in an AlxGa1-xAs/GaAs/AlxGa1-xAs quantum well and calculate the two-dimensional band structure and the band-gap renormalization. The inclusion of the valence band coupling in the calculation of the exchange-correlation potentials for holes and electrons leads to a much better agreement between theoretical and experimental data than when it is omitted.
Place, publisher, year, edition, pages
American Physical Society , 1997. Vol. 56, no 7, 3664-3671 p.
Condensed Matter Physics
IdentifiersURN: urn:nbn:se:liu:diva-116065DOI: 10.1103/PhysRevB.56.3664ISI: A1997XR96400039OAI: oai:DiVA.org:liu-116065DiVA: diva2:813299