New aspects of the b*-LA phonon of CuGeO3

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

Research output: Contribution to journalArticle

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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 - Sep 1999
Externally publishedYes

Fingerprint

Inelastic neutron scattering
Excitation energy
twisting
ingredients
tetrahedrons
inelastic scattering
neutron scattering
high resolution
excitation
energy

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

Cite this

Nishi, M., Kakurai, K., Fujii, Y., Katano, S., Akimitsu, J., Yethiraj, M., & Fernandez-Baca, J. A. (1999). New aspects of the b*-LA phonon of CuGeO3 . Journal of Physics and Chemistry of Solids, 60(8), 1109-1111. https://doi.org/10.1016/S0022-3697(99)00062-1

New aspects of the b*-LA phonon of CuGeO3 . / Nishi, M.; Kakurai, K.; Fujii, Y.; Katano, S.; Akimitsu, Jun; Yethiraj, M.; Fernandez-Baca, J. A.

In: Journal of Physics and Chemistry of Solids, Vol. 60, No. 8, 09.1999, p. 1109-1111.

Research output: Contribution to journalArticle

Nishi, M, Kakurai, K, Fujii, Y, Katano, S, Akimitsu, J, Yethiraj, M & Fernandez-Baca, JA 1999, 'New aspects of the b*-LA phonon of CuGeO3 ', Journal of Physics and Chemistry of Solids, vol. 60, no. 8, pp. 1109-1111. https://doi.org/10.1016/S0022-3697(99)00062-1
Nishi, M. ; Kakurai, K. ; Fujii, Y. ; Katano, S. ; Akimitsu, Jun ; Yethiraj, M. ; Fernandez-Baca, J. A. / New aspects of the b*-LA phonon of CuGeO3 . In: Journal of Physics and Chemistry of Solids. 1999 ; Vol. 60, No. 8. pp. 1109-1111.
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