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A semiclassical approach to the ground state and density oscillations of quantum dots

✍ Scribed by A. Puente; M. Casas; Ll. Serra

Publisher
Elsevier Science
Year
2000
Tongue
English
Weight
363 KB
Volume
8
Category
Article
ISSN
1386-9477

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✦ Synopsis

A semiclassical Thomas-Fermi method, including a Weizs acker gradient term, is implemented to describe ground states of two-dimensional nanostructures of arbitrary shape. Time-dependent density oscillations are addressed in the same spirit using the corresponding semiclassical time-dependent equations. The validity of the approximations is tested, both for ground state and density oscillations, compared with the available microscopic Kohn-Sham solutions.

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The ground-state lifetime of bound polar
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✍ Wei-Ping Li; Zi-Wu Wang; Ji-Wen Yin; Yi-Fu Yu; Jing-Lin Xiao πŸ“‚ Article πŸ“… 2008 πŸ› Elsevier Science 🌐 English βš– 260 KB

The ground-state energy of bound polaron was obtained with strong electron-LO-phonon coupling using a variational method of the Pekar type in a parabolic quantum dot (QD). Quantum transition occurred in the quantum system due to the electron-phonon interaction and the influence of temperature. That