Coupled-mode theory, Mori damping, and the shape of lattice-absorption bands

15 February 1975

journal article
research article
Published by American Physical Society (APS) in Physical Review B

Vol. 11 (4) , 1768-1769
https://doi.org/10.1103/physrevb.11.1768

Abstract

The equivalence between the frequency-dependent susceptibility obtained by coupling an oscillator linearly to some relaxation process and by utilizing the notion of generalized damping discussed by Mori is pointed out. The effect of such coupling or generalized damping on lattice absorption and reflectivity is examined.

Keywords

MORI
GENERALIZED DAMPING
LATTICE ABSORPTION
COUPLING
SUSCEPTIBILITY OBTAINED
FREQUENCY DEPENDENT
MODE THEORY

This publication has 3 references indexed in Scilit:

Acoustic—Soft-Optic Mode Interactions in Ferroelectric BaTi $O_{3}$
Physical Review Letters, 1971
Transport, Collective Motion, and Brownian Motion
Progress of Theoretical Physics, 1965
Coupled-Optical-Phonon-Mode Theory of the Infrared Dispersion in BaTi $O_{3}$ , SrTi $O_{3}$ , and KTa $O_{3}$
Physical Review B, 1964