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Title: The pinning effect in quantum dots

The pinning effect is studied in a Gaussian quantum dot using the improved Wigner-Brillouin perturbation theory (IWBPT) in the presence of electron-phonon interaction. The electron ground state plus one phonon state is degenerate with the electron in the first excited state. The electron-phonon interaction lifts the degeneracy and the first excited states get pinned to the ground state plus one phonon state as we increase the confinement frequency.
Authors:
 [1] ;  [2]
  1. School of Physics, University of Hyderabad, Hyderabad-500046 (India)
  2. Department of Physics, D V R College of Engineering and Technology, Hyderabad-502285 (India)
Publication Date:
OSTI Identifier:
22269251
Resource Type:
Journal Article
Resource Relation:
Journal Name: AIP Conference Proceedings; Journal Volume: 1591; Journal Issue: 1; Conference: 58. DAE solid state physics symposium 2013, Patiala, Punjab (India), 17-21 Dec 2013; Other Information: (c) 2014 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; 77 NANOSCIENCE AND NANOTECHNOLOGY; ELECTRON-PHONON COUPLING; ELECTRONS; EXCITED STATES; GROUND STATES; PERTURBATION THEORY; QUANTUM DOTS