Optical vibrations in the Zn3P2lattice
- 27 November 1989
- journal article
- Published by IOP Publishing in Journal of Physics: Condensed Matter
- Vol. 1 (47) , 9283-9299
- https://doi.org/10.1088/0953-8984/1/47/002
Abstract
Optical vibrations in Zn3P2 crystals were investigated using reflectivity spectra in the 40-400 cm-1 wavenumber range, absorption spectra in the 380-1200 cm-1 range and Raman scattering spectra in the 25-500 cm-1 range. From these the energies of the one-phonon and multi-phonon transitions were determined. The symmetry of phonon branches through the symmetry lines and points in the Zn3P2 Brillouin zone were determined using group theory analysis. The selection rules of the overtones and combinations permitted in infrared and/or Raman spectra were derived and used to interpret the observed multiphonon transitions.Keywords
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