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Exchange-correlation energy of a multicomponent two-dimensional electron gas

Karkkainen, K; Koskinen, M; Reimann, Stephanie LU and Manninen, M (2003) In Physical Review B (Condensed Matter and Materials Physics) 68(20: 205322).
Abstract
We discuss the exchange-correlation energy of a multicomponent (multivalley) two-dimensional (2D) electron gas and show that an extension of the recent parametrization [C. Attaccalite, S. Moroni, P. Gori-Giorgi, and G. B. Bachelet, Phys. Rev. Lett. 88, 256601 (2002)] of the exchange-correlation energy by Attaccalite describes well also the multicomponent system. We suggest a simple mass dependence of the correlation energy and apply it to study the phase diagram of the multicomponent 2D electron (or hole) gas. The results show that even a small mass difference of the components (e.g., heavy and light holes) decreases the concentration of the lighter components already at relatively high densities.
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author
organization
publishing date
type
Contribution to journal
publication status
published
subject
in
Physical Review B (Condensed Matter and Materials Physics)
volume
68
issue
20: 205322
publisher
American Physical Society
external identifiers
  • wos:000187314400060
  • scopus:0348046414
ISSN
1098-0121
DOI
10.1103/PhysRevB.68.205322
language
English
LU publication?
yes
id
6f1c8f99-c424-42d9-a8af-e3e9f4c8d453 (old id 292298)
date added to LUP
2007-09-16 06:36:25
date last changed
2017-01-01 07:12:02
@article{6f1c8f99-c424-42d9-a8af-e3e9f4c8d453,
  abstract     = {We discuss the exchange-correlation energy of a multicomponent (multivalley) two-dimensional (2D) electron gas and show that an extension of the recent parametrization [C. Attaccalite, S. Moroni, P. Gori-Giorgi, and G. B. Bachelet, Phys. Rev. Lett. 88, 256601 (2002)] of the exchange-correlation energy by Attaccalite describes well also the multicomponent system. We suggest a simple mass dependence of the correlation energy and apply it to study the phase diagram of the multicomponent 2D electron (or hole) gas. The results show that even a small mass difference of the components (e.g., heavy and light holes) decreases the concentration of the lighter components already at relatively high densities.},
  author       = {Karkkainen, K and Koskinen, M and Reimann, Stephanie and Manninen, M},
  issn         = {1098-0121},
  language     = {eng},
  number       = {20: 205322},
  publisher    = {American Physical Society},
  series       = {Physical Review B (Condensed Matter and Materials Physics)},
  title        = {Exchange-correlation energy of a multicomponent two-dimensional electron gas},
  url          = {http://dx.doi.org/10.1103/PhysRevB.68.205322},
  volume       = {68},
  year         = {2003},
}