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    Electronic properties of a large quantum dot at a finite temperature
    (ELSEVIER SCIENCE BV, 2005) Gulveren, B; Atav, U; Tomak, M
    The physical properties of a two-dimensional parabolic quantum dot composed of large number of interacting electrons are numerically determined by the Thomas Fermi (TF) method at a finite temperature. Analytical solutions are given for zero temperature for comparative purposes. The exact solution of the TF equation is obtained for the non-interacting system at finite temperatures. The effect of the number of particles and temperature on the properties are investigated both for interacting and non-interacting cases. The results indicate that the effect of e e interaction on the density profile shows different temperature dependencies above and below a certain temperature T-c. (c) 2005 Elsevier B.V. All rights reserved.
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    A parabolic quantum dot with N electrons and an impurity
    (ELSEVIER SCIENCE BV, 2005) Gulveren, B; Atav, U; Sahin, M; Tomak, M
    Ground-state properties of a two-dimensional quantum dot composed of N electrons and an impurity are investigated by the Thomas-Fermi (TF) method at T = 0. The changes induced by the impurity in electron density, chemical potential and total energy are calculated. Calculations are also performed for different number of particles and strength of confinement. The results indicate that Thomas-Fermi approximation is applicable even when the system contains only a few particles. (c) 2005 Elsevier B.V. All rights reserved.