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Title: Time-dependent pseudo Jahn-Teller effect: Phonon-mediated long-time nonadiabatic relaxation

Our system under theoretical consideration is an impurity center in a solid. We are considering the time evolution of the center in a quasi-degenerate electronic state. Strict quantum mechanical treatment of non-adiabadicity of the state is used. The phonon continuum is taken into account in addition to the vibration responsible for the main vibronic interaction. To describe the dynamics of the excited state a master equation has been used. The theoretical considerations are illustrated by the calculations of the long-time evolution of vibrations of the center, influenced by the emission of phonons to the bulk.
Authors:
;  [1]
  1. Institute of Physics, University of Tartu, Riia 142, 51014 Tartu (Estonia)
Publication Date:
OSTI Identifier:
22255128
Resource Type:
Journal Article
Resource Relation:
Journal Name: Journal of Chemical Physics; Journal Volume: 140; Journal Issue: 6; Other Information: (c) 2014 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
37 INORGANIC, ORGANIC, PHYSICAL AND ANALYTICAL CHEMISTRY; EMISSION; EXCITED STATES; IMPURITIES; INTERACTIONS; JAHN-TELLER EFFECT; PHONONS; QUANTUM MECHANICS; RELAXATION; SOLIDS; TIME DEPENDENCE