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State of Conduction Electron Interacting with Frenkel Excitons
Author(s) -
Nagaev E. L.,
Sokolova E. B.
Publication year - 1974
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.2220640204
Subject(s) - exciton , excited state , polaron , electron , condensed matter physics , physics , atom (system on chip) , atomic physics , semiconductor , thermal conduction , quantum mechanics , computer science , embedded system
A special type of interaction between conduction electrons and Frenkel excitons in magnetic or organic semiconductors different from the usual polarization interaction is described. It consists in that the transitions of the conduction electron from one atom to another are accompanied by the creation or annihilation of an exciton at one of these atoms. Furthermore, transitions of the electron from non‐excited to excited atoms are possible which are accompanied by exciton transitions in the opposite direction. As a result of the interaction, specific states of charge carriers called transferons arise which differ strongly from excitonic polarons. An expression for self‐energy and damping of the transferon is obtained in the limit of weak electron‐exciton coupling.