Normal-modes study of HgBa2Ca2Cu3O8+δ single crystals by a micro-Raman analysis
1996; Elsevier BV; Volume: 259; Issue: 3-4 Linguagem: Inglês
10.1016/0921-4534(96)00091-3
ISSN1873-2143
AutoresA. Sacuto, A. Lebon, D. Colson, A. Bertinotti, J.F. Marucco, V. Viallet,
Tópico(s)High-pressure geophysics and materials
ResumoPolarized-light micro-Raman scattering (PLMRS) measurements have been performed on pre- and post-annealed Hg-1223 single crystals with Tc = 120 K and 135 K, respectively. Group-theoretical investigations, comparative analyses of the Hg-1223 structure to the Tl-1223 isomorphous one and arguments on electron-photon interaction have permitted us to identify the five Alg normal modes and defect for the first time the six Eg modes of the Hg-1223 system. No B1g mode has been observed.
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