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Local mode of H − substitutional ion in KCN
Author(s) -
Castro J. C.,
Basso H. C.,
de Souza M.
Publication year - 1976
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.2220770232
Subject(s) - laser linewidth , ion , halide , phonon , atomic physics , crystal (programming language) , materials science , phase (matter) , chemistry , analytical chemistry (journal) , condensed matter physics , physics , optics , inorganic chemistry , laser , organic chemistry , chromatography , computer science , programming language
The local mode of a substitutional H − ion in KCN single crystals, the U‐center, is measured in the three phases of the crystal. In the cubic phase the local mode peaks at 510 cm −1 with a linewidth of 120 cm −1 . The higher energy phonon side band in the lower temperature phase is found to be displaced 80 cm −1 from the local mode peak. The low‐temperature linewidth of the H s −local mode is approximately twice that of the D s −localized vibration. Also in opposition to the behavior in the alkali halides the linewidth keeps a high value even a t temperatures as low as 2 K.