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Exciton Propagation in the Field of a Driven Vibration
Author(s) -
Marlow F.,
Esser B.
Publication year - 1988
Publication title -
physica status solidi (b)
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.51
H-Index - 109
eISSN - 1521-3951
pISSN - 0370-1972
DOI - 10.1002/pssb.2221480220
Subject(s) - exciton , vibration , phonon , amplitude , physics , excited state , field (mathematics) , kernel (algebra) , mode (computer interface) , quantum electrodynamics , statistical physics , mechanics , classical mechanics , computational physics , quantum mechanics , mathematics , computer science , pure mathematics , combinatorics , operating system
The propagation of excitons in the presence of a strongly excited vibration is considered using the generalized master equation (GME) approach. A model is developed in which the amplitude of the vibration is subjected to stochastic variations modelling the fluctuations of the energy supply into the driven mode. The corresponding GME kernel is calculated and the parameters separating the regions of coherent and incoherent exciton propagation are discussed. It is shown that the presence of a non‐equilibrium vibration substantially modifies the transport as compared to the interaction with equilibrium phonons.