Premium
On the Quasi‐Harmonic Theory of Phonons
Author(s) -
Ishikawa K.
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.19670210111
Subject(s) - anharmonicity , phonon , physics , harmonic , transformation (genetics) , quantum mechanics , condensed matter physics , quantum electrodynamics , chemistry , biochemistry , gene
The shift of phonon frequencies in anharmonic crystals is calculated self‐consistently by a canonical transformation equivalent to Cowley's quasi‐harmonic approximation. The damping of phonons is obtained from the phonon kinetic equations in the above approximation.