Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/5396
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Title: Thickness effect on impurity-bound polaronic energy levels in a parabolic quantum dot in magnetic fields
Authors: Chen, CY
Jin, PW
Li, WS
Lin, DL
Issue Date: 15-Dec-1997
Source: Physical review. B, Condensed matter and materials physics, 15 Dec. 1997, v. 56, no. 23, p. 14913–14916
Abstract: Energy levels of an impurity atom and its binding energy in a quantum dot with or without electron-phonon interactions are obtained by the second-order perturbation theory. The dot is confined laterally by a parabolic potential in quantum-well structures. The energy correction is expressed as a function of the strength of lateral confinement, the applied magnetic field, and the thickness of the quantum dot in question. It is shown that the binding energy depends sensitively on the thickness if it is of the order of the polaron size or less. In the case of thicker quantum dots, the finite thickness reduces the binding energy by approximately 10%.
Keywords: Binding energy
Electron-phonon interactions
Impurity states
Interface states
Perturbation theory
Polarons
Semiconductor quantum dots
Semiconductor quantum wells
Publisher: American Physical Society
Journal: Physical review. B, Condensed matter and materials physics 
ISSN: 1098-0121
EISSN: 1550-235X
DOI: 10.1103/PhysRevB.56.14913
Rights: Physical Review B © 1997 The American Physical Society. The Journal's web site is located at http://prb.aps.org/
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