Zone edge phonons in CdS1?xSex |
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| Authors: | R Beserman |
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| Institution: | Solid State Institute, Technion-Israel Institute of Technology, Haifa, Israel |
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| Abstract: | Zone edge phonons of mixed CdS1?xSex have been studied by mean of infrared absorption and Raman scattering techniques. In the A point of the Brillouin zone, it has been shown that transverse acoustical phonons have a one mode behaviour, and that optical phonons have a two modes behaviour. CdS and CdSe zone center phonons can combined and give a LO(CdS) + LO(CdSe) Raman peak in addition to the 2LO(CdS) and 2LO(CdSe) peaks; this is not the case for phonons from the edge of the Brillouin-zone where no CdS + CdSe combination can take place. |
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