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Type: Artigo de periódico
Title: Splittings And Correlations Between The Long-wavelength Optical Phonons In The Layer Compounds Gase, Gate, And Gase1-xtex
Author: Cerdeira F.
Meneses E.A.
Gouskov A.
Abstract: The zone-center optical phonons of layer materials GaSe, GaTe, and their solid solutions are studied by means of Raman scattering. Most of the structure in the hitherto unstudied spectrum of GaTe is identified by following their evolution in the solid solutions and relating them to already known bands in GaSe. Increased layer-layer interaction, as solutions become richer in Te, allow the observation of Davydov splittings. Detailed study of the spectra of GaSe1-xTex reveal an abrupt phase transition from hexagonal to monoclinic structures in the composition range 0.26<x<0.60. Both one- and two-mode behaviors are observed in the phonon bands of the solid solutions. © 1977 The American Physical Society.
Rights: aberto
Identifier DOI: 10.1103/PhysRevB.16.1648
Date Issue: 1977
Appears in Collections:Unicamp - Artigos e Outros Documentos

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