The lattice evolution of the spin-Peierls material CuGeO3 studied by neutron scattering

M. Fujita, M. Arai, K. Ubukata, H. Ohta, M. Mino, M. Motokawa, K. Knight, R. Ibberson, J. B. Forsyth, S. M. Bennington, O. Akimitsu, J. Fujita

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Abstract

CuGeO3 is an inorganic compound which possesses a spin-Peierls transition. We have studied the crystal structure and the phonon dynamics of CuGeO3 by neutron scattering. We found that a lattice anomaly starts to evolve significantly above the transition temperature, Tsp, and there is a drastic change below Tsp. The phonon mode over a wide energy range changes drastically at high temperature. Therefore we conclude that the inherent structural instability in the crystal structure provides favorable conditions for the lattice-spin interaction and induces the spin-Peierls transition, i.e. lattice dimerization.

Original languageEnglish
Pages (from-to)288-290
Number of pages3
JournalPhysica B: Physics of Condensed Matter
Volume213-214
Issue numberC
DOIs
Publication statusPublished - Aug 1 1995

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Electrical and Electronic Engineering

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    Fujita, M., Arai, M., Ubukata, K., Ohta, H., Mino, M., Motokawa, M., Knight, K., Ibberson, R., Forsyth, J. B., Bennington, S. M., Akimitsu, O., & Fujita, J. (1995). The lattice evolution of the spin-Peierls material CuGeO3 studied by neutron scattering. Physica B: Physics of Condensed Matter, 213-214(C), 288-290. https://doi.org/10.1016/0921-4526(95)00132-S