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Phonon Polarization Operator in the Random Phase Approximation
Author(s) -
Kashcheev V. N.
Publication year - 1971
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.2220430105
Subject(s) - phonon , random phase approximation , renormalization , condensed matter physics , polarization (electrochemistry) , physics , curie temperature , operator (biology) , quantum mechanics , chemistry , ferromagnetism , biochemistry , repressor , transcription factor , gene
In the random phase approximation the imaginary part of the phonon polarization operator is calculated in the left vicinity of the Curie point as well as the renormalization of the sound velocity due to the spin‐phonon interaction of exchange origin in a cubic ferrodielectric.