New aspects of the b*-LA phonon of CuGeO3

M. Nishi, K. Kakurai, Y. Fujii, S. Katano, J. Akimitsu, M. Yethiraj, J. A. Fernandez-Baca

Research output: Contribution to journalConference articlepeer-review

6 Citations (Scopus)

Abstract

We performed high resolution measurements of the b*-LA phonon branch of CuGeO3 by inelastic neutron scattering. From the results it was clarified that the b*-LA broad branch reported earlier is composed of two phonon branches with excitation energies very nearby. The second branch close to this b*-LA mode cannot be assigned in the space group Pbmm and it may indicate that a twisting motion of GeO4 tetrahedra couples to the b*-LA mode. This coupling may be an indispensable ingredient for the spin-Peierls transition in CuGeO3.

Original languageEnglish
Pages (from-to)1109-1111
Number of pages3
JournalJournal of Physics and Chemistry of Solids
Volume60
Issue number8
DOIs
Publication statusPublished - Jan 1 1999
Externally publishedYes
EventProceedings of the 1998 7th ISSP International Symposium Frontiers in Neutron Scattering Research (ISSP7) - Tokyo, Jpn
Duration: Nov 24 1998Nov 27 1998

ASJC Scopus subject areas

  • Chemistry(all)
  • Materials Science(all)
  • Condensed Matter Physics

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