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On the Operator of Exciton‐Phonon Interaction
Author(s) -
Davydov A. S.
Publication year - 1967
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.19670200113
Subject(s) - exciton , phonon , tetragonal crystal system , operator (biology) , condensed matter physics , crystal (programming language) , electron , physics , quantum mechanics , chemistry , biochemistry , repressor , computer science , transcription factor , gene , programming language , phase (matter)
A general expression for the operator for the interaction of molecular excitons with acoustic and optical phonons is obtained in a linear approximation. An explicit expression is found for the dependence of exciton‐phonon interactions on their wave‐vectors for a one dimensional crystal and for crystals of cubic, rhombic and tetragonal systems. The results obtained are compared with the operator for the interaction of free electrons and Wannier excitons with acoustic and optical vibrations in ionic crystals.