The Influence of Confining Parameters on the Ground State Properties of Interacting Electrons in a Two-dimensional Quantum Dot with Gaussian Potential
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Date
2018
Authors
Journal Title
Journal ISSN
Volume Title
Publisher
KOREAN PHYSICAL SOC
Access Rights
info:eu-repo/semantics/closedAccess
Abstract
In this work, the ground-state properties of an interacting electron gas confined in a twodimensional quantum dot system with the Gaussian potential v(r) = V-0(1 - exp(-r(2)/p)), where V-0 and p are confinement parameters, are determined numerically by using the Thomas-Fermi approximation. The shape of the potential is modified by changing the V-0 and p values, and the influence of the confining potential on the system's properties, such as the chemical energy, the density profile, the kinetic energy, the confining energy, etc., is analyzed for both the non-interacting and the interacting cases. The results are compared with those calculated for a harmonic potential, and excellent agreement is obtained in the limit of high p values for both the non-interacting and the interacting cases.
Description
Keywords
Quantum dot, Electron gas, Thomas-Fermi approximation, Gaussian potential
Journal or Series
JOURNAL OF THE KOREAN PHYSICAL SOCIETY
WoS Q Value
Q4
Scopus Q Value
Q4
Volume
73
Issue
11
