A variational approach with squeezed-states for the polaronic effects in quantum dots

Kervan N., Altanhan T., Chatterjee A.

PHYSICS LETTERS A, vol.315, no.3-4, pp.280-287, 2003 (SCI-Expanded) identifier identifier

  • Publication Type: Article / Article
  • Volume: 315 Issue: 3-4
  • Publication Date: 2003
  • Doi Number: 10.1016/s0375-9601(03)01011-9
  • Journal Name: PHYSICS LETTERS A
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Page Numbers: pp.280-287
  • Keywords: polarons, quantum dots, ELECTRON-PHONON INTERACTION, PARABOLIC CONFINEMENT, MAGNETIC-FIELD, OPTICAL POLARON, EXCITED-STATES, ENERGY-LEVELS, GROUND-STATE, ABSORPTION, LEVEL, WIRES
  • Ankara University Affiliated: No

Abstract

The polaronic effects for an electron confined in a parabolic quantum dot are investigated by means of squeezed states. A variational calculation is performed to obtain the polaronic correction to the ground and the first-excited state energies of an electron interacting with optical-phonons. It is shown that the squeezing of the phonon state leads to a significant increase in the polaronic effects in a quantum dot. (C) 2003 Elsevier B.V. All rights reserved.