%0 Conference Proceedings
%T SUPERLATTICE EFFECTS ON PHONONS IN STRAINED ZNTE-ZNSE STRUCTURES
%+ Laboratoire Physique des Solides de Toulouse
%+ Groupe d'étude des semiconducteurs (GES)
%A Frandon, J.
%A Renucci, Ma
%A Briot, N.
%A Briot, Olivier
%A Aulombard, Roger
%< avec comité de lecture
%( JOURNAL OF CRYSTAL GROWTH
%B 6th International Conference on I-VI Compounds and Related Optoelectronic Materials
%C Newport, RI, United States
%V 138
%P 513
%8 1993
%D 1993
%Z Physics [physics]/Condensed Matter [cond-mat]/Materials Science [cond-mat.mtrl-sci]Conference papers
%X Raman measurements are used to probe the built-in strain due to the large lattice mismatch in two short-period ZnSe-ZnTe superlattices. In the largest period structure, local information on confinement and strain effects in the different layers is deduced from the LO phonon frequencies. An estimate of the in-plane strain gives evidence of a partial relaxation of both layers; in this structure, folded acoustical phonons are clearly observed under resonant conditions. The Raman spectra of the shortest period superlattice are characterized by a unique structure assigned to an unusual propagative mode resulting from the overlap of the optical bands of the two constituents.
%G English
%L hal-00547280
%U https://hal.science/hal-00547280
%~ UNIV-TLSE3
%~ LPST
%~ CNRS
%~ UNIV-MONTP2
%~ GES
%~ UNIV-MONTPELLIER
%~ UNIV-UT3
%~ UT3-INP
%~ UT3-TOULOUSEINP
%~ UM1-UM2