Long-wavelength optical phonons inSe
- 15 January 1989
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review B
- Vol. 39 (2) , 1207-1211
- https://doi.org/10.1103/physrevb.39.1207
Abstract
The far-infrared reflection spectra and transmission spectra of Se (x=0.18, 0.31) have been measured. Anomalous frequencies shifts of the MnSe-like optical phonons with the increase of composition x have been observed. The force constants of Mn-Se and Zn-Se have been obtained by fitting the experimental spectra with the random-element-isodisplacement model.
Keywords
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