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Full-Text Articles in Physics
Raman Scattering From Zns Polytypes, J. Schneider, Roger D. Kirby
Raman Scattering From Zns Polytypes, J. Schneider, Roger D. Kirby
Roger Kirby Publications
The Raman spectra of the 2H and 4H structures of ZnS have been measured between room temperature and 60 K, and compared with the spectra from zinc blende ZnS. The observed phonons in each case are in good agreement with those expected from the known structural differences.
Raman-Active Resonance Modes, Overtones, And Anharmonicity In Nacl:Cu+, B.N. Ganguly, Roger D. Kirby, M.V. Klein, G.P. Montgomery Jr.
Raman-Active Resonance Modes, Overtones, And Anharmonicity In Nacl:Cu+, B.N. Ganguly, Roger D. Kirby, M.V. Klein, G.P. Montgomery Jr.
Roger Kirby Publications
The existence of an impurity-activated Eg resonance mode in NaCl:Cu+ has been suggested by several previous experiments. Raman data presented here reveal this resonance directly and also reveal the three components of the first overtone of the 23.5-cm-1 infrared resonance mode. The frequencies of the Eg resonance and the Eg component of the overtone are shifted as a result of a strong anharmonic coupling. Their line shapes and strengths are considerably altered by an interference between the Raman amplitudes. A reasonable fit to the data has been obtained using a simple theory.