Raman scattering of CuGeO3 and Y2BaNiO5

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

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1 Citation (Scopus)


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
Issue numberSUPPL. 4
Publication statusPublished - 1996
Externally publishedYes

ASJC Scopus subject areas

  • Physics and Astronomy(all)


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