Magnetic excitations in CuGeO3

M. Nishi, O. Fujita, Jun Akimitsu, K. Kakurai, Y. Fujii

Research output: Contribution to journalArticle

10 Citations (Scopus)

Abstract

In the inorganic spin-Peierls compound CuGeO3, we found a pronounced anisotropic magnetic energy dispersion, i.e. intra-chain exchange Jc ≈ 10.4 meV, inter-chain exchanges Jb ≈ 0.1 Jc and Ja ≈ - 0.01Jc and gap energy 2.1 meV extrapolated to T = 0 K. We also observed critical scattering at (0, 1, 1/2) above Tsp. The ratio of the correlation lengths ξcb is in good agreement with that obtained from X-ray scattering at (1/2, 1, 1/2) by Pouget et al. This fact suggests that the Cu2+ spins fluctuate to form singlet-pair short-range order, but not to form ordinary antiferromagnetic order above Tsp.

Original languageEnglish
Pages (from-to)275-277
Number of pages3
JournalPhysica B: Condensed Matter
Volume213-214
Issue numberC
DOIs
Publication statusPublished - Aug 1 1995
Externally publishedYes

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X ray scattering
Energy gap
Scattering
scattering
excitation
x rays
energy

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Electronic, Optical and Magnetic Materials
  • Electrical and Electronic Engineering
  • Materials Science(all)

Cite this

Nishi, M., Fujita, O., Akimitsu, J., Kakurai, K., & Fujii, Y. (1995). Magnetic excitations in CuGeO3 . Physica B: Condensed Matter, 213-214(C), 275-277. https://doi.org/10.1016/0921-4526(95)00128-V

Magnetic excitations in CuGeO3 . / Nishi, M.; Fujita, O.; Akimitsu, Jun; Kakurai, K.; Fujii, Y.

In: Physica B: Condensed Matter, Vol. 213-214, No. C, 01.08.1995, p. 275-277.

Research output: Contribution to journalArticle

Nishi, M, Fujita, O, Akimitsu, J, Kakurai, K & Fujii, Y 1995, 'Magnetic excitations in CuGeO3 ', Physica B: Condensed Matter, vol. 213-214, no. C, pp. 275-277. https://doi.org/10.1016/0921-4526(95)00128-V
Nishi, M. ; Fujita, O. ; Akimitsu, Jun ; Kakurai, K. ; Fujii, Y. / Magnetic excitations in CuGeO3 . In: Physica B: Condensed Matter. 1995 ; Vol. 213-214, No. C. pp. 275-277.
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