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- Title
Polaronic correction to the first excited electronic energy level in an anisotropic semiconductor quantum dot.
- Authors
Feng, D. H.; Xu, Z. Z.; Jia, T. Q.; Li, X. X.; Li, C. B.; Sun, H. Y.; Xu, S. Z.
- Abstract
Within the framework of second-order Rayleigh-Schrödinger perturbation theory, the polaronic correction to the first excited state energy of an electron in an quantum dot with anisotropic parabolic confinements is presented. Compared with isotropic confinements, anisotropic confinements will make the degeneracy of the excited states to be totally or partly lifted. On the basis of a three-dimensional Fröhlich’s Hamiltonian with anisotropic confinements, the first excited state properties in two-dimensional quantum dots as well as quantum wells and wires can also be easily obtained by taking special limits. Calculations show that the first excited polaronic effect can be considerable in small quantum dots.
- Subjects
ELECTRONICS; ELECTRICAL engineering; FORCE &; energy; ANISOTROPY; QUANTUM dots
- Publication
European Physical Journal B: Condensed Matter, 2005, Vol 44, Issue 1, p15
- ISSN
1434-6028
- Publication type
Article
- DOI
10.1140/epjb/e2005-00094-6