Effect of exchange-correlation potential on the plasmon dispersions in a doped symmetrical double quantum well
PHYSICA STATUS SOLIDI B-BASIC SOLID STATE PHYSICS, vol.244, no.2, pp.635-641, 2007 (SCI-Expanded, Scopus)
- Publication Type: Article / Article
- Volume: 244 Issue: 2
- Publication Date: 2007
- Doi Number: 10.1002/pssb.200642280
- Journal Name: PHYSICA STATUS SOLIDI B-BASIC SOLID STATE PHYSICS
- Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
- Page Numbers: pp.635-641
- Open Archive Collection: AVESIS Open Access Collection
- Anadolu University Affiliated: No
Abstract
We have calculated the plasmon dispersion relations in a doped double quantum well with and without exchange-correlation potential added to the effective potential of the system. The calculations were done for high and low doping densities by solving the Schrodinger and Poisson equations self-consistently. Our numerical results show that the exchange - correlation potential is quite important at high doping densities of donor impurities for plasmon dispersions at large wave vectors. On the other hand, the ratio of subband populations n(i) to donor density N-D is more affected at low densities. (C) 2007 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.