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Investigation of k = 0 phonons in Bi, Cd, Mg, and Zn by Raman scattering
Author(s) -
Grant W. B.,
Schulz H.,
HÜfner S.,
Pelzl J.
Publication year - 1973
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.2220600136
Subject(s) - phonon , laser linewidth , raman scattering , raman spectroscopy , condensed matter physics , scattering , line (geometry) , materials science , x ray raman scattering , chemistry , analytical chemistry (journal) , physics , optics , laser , geometry , mathematics , chromatography
Measurements are reported for optical phonons ( k = 0) by Raman scattering at 300, 80, and 2 K for Bi, Cd, Mg, and Zn. The linewidths are found to increase, and the frequencies to decrease, as the temperature is raised. The temperature dependent portion of the linewidth is attributed to a two‐phonon decay process. In addition, the contributions to the line‐width from the isotope effect, the electron‐phonon interaction, and strains are discussed.