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Off‐Symmetry Phonon Frequencies of Copper
Author(s) -
Chopra K. K.,
Bouarab S.
Publication year - 1984
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.2221250208
Subject(s) - symmetry (geometry) , phonon , copper , physics , condensed matter physics , simple (philosophy) , phenomenological model , theoretical physics , quantum mechanics , mathematics , materials science , geometry , philosophy , epistemology , metallurgy
Abstract A simple phenomenological model is applied to interpret the experimentally measured off‐symmetry phonon frequencies of copper. It is emphasized that a truly acceptable theoretical model should not only give good results in the symmetry directions but must also be capable of a satisfactory reproduction of frequencies in the off‐symmetry directions.