Raman scattering of CuGeO3 and Y2BaNiO5

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

Research output: Contribution to journalArticle

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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 - 1996
Externally publishedYes

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Raman spectra
infrared absorption
excitation
infrared spectra
absorption spectra
crystal structure

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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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

Raman scattering of CuGeO3 and Y2BaNiO5 . / Ogita, Norio; Udagawa, Masayuki; Yokoo, Tetsuya; Fujita, Osanm; Akimitsu, Jun.

In: Czechoslovak Journal of Physics, Vol. 46, No. SUPPL. 4, 1996, p. 1975-1976.

Research output: Contribution to journalArticle

Ogita, N, Udagawa, M, Yokoo, T, Fujita, O & Akimitsu, J 1996, 'Raman scattering of CuGeO3 and Y2BaNiO5 ', Czechoslovak Journal of Physics, vol. 46, no. SUPPL. 4, pp. 1975-1976. https://doi.org/10.1007/BF02570979
Ogita, Norio ; Udagawa, Masayuki ; Yokoo, Tetsuya ; Fujita, Osanm ; Akimitsu, Jun. / Raman scattering of CuGeO3 and Y2BaNiO5 . In: Czechoslovak Journal of Physics. 1996 ; Vol. 46, No. SUPPL. 4. pp. 1975-1976.
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AB - 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.

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