Effect of exchange-correlation potential on the plasmon dispersions in a doped symmetrical double quantum well
Date
2007
Editor(s)
Advisor
Supervisor
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Source Title
Physica Status Solidi (B) Basic Research
Print ISSN
0370-1972
Electronic ISSN
1521-3951
Publisher
Wiley - V C H Verlag GmbH & Co. KGaA
Volume
244
Issue
2
Pages
635 - 641
Language
English
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Journal Title
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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 Schrödinger 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 nl to donor density ND is more affected at low densities.