Raman scattering of CuGeO3 and Y2BaNiO5

Norio Ogita, Masayuki Udagawa, Tetsuya Yokoo, Osanm Fujita, Jun Akimitsu

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Abstract

Raman scattering and infrared absorption spectra of CuGeO3 and Y2BaNiO5 have been measured. CuGeO3is a typical inorganic spin-Peierls system with S=1/2 and Y2BaNiO5 is a recently discovered Haldane system with S=1. Two magnon excitation along the c*-axis is found for CuGeO3. Additional two-magnon excitations due to one dimensional fluctuation are observed for both system. For CuGeO3 the mode at about 30cm -1 is the soft mode due to the lattice distortion, not dug to the spin gap. The normal mode calculations for CuGeO3 show that the crystal structure is stabilized by the Ge-O frame.

Original languageEnglish
Pages (from-to)1975-1976
Number of pages2
JournalCzechoslovak Journal of Physics
Volume46
Issue numberSUPPL. 4
DOIs
Publication statusPublished - Dec 1 1996

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ASJC Scopus subject areas

  • Physics and Astronomy(all)

Cite this

Ogita, N., Udagawa, M., Yokoo, T., Fujita, O., & Akimitsu, J. (1996). Raman scattering of CuGeO3 and Y2BaNiO5. Czechoslovak Journal of Physics, 46(SUPPL. 4), 1975-1976. https://doi.org/10.1007/BF02570979