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

doi:10.1016/0921-4526(95)00132-S

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

Research output: Contribution to journal › Article › peer-review

11 Citations (Scopus)

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, T_sp, and there is a drastic change below T_sp. 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 language	English
Pages (from-to)	288-290
Number of pages	3
Journal	Physica B: Physics of Condensed Matter
Volume	213-214
Issue number	C
DOIs	https://doi.org/10.1016/0921-4526(95)00132-S
Publication status	Published - 1995 Aug 1
Externally published	Yes

ASJC Scopus subject areas

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

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

In: Physica B: Physics of Condensed Matter, Vol. 213-214, No. C, 01.08.1995, p. 288-290.

Research output: Contribution to journal › Article › peer-review

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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.",

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AU - Arai, M.

AU - Ubukata, K.

AU - Ohta, H.

AU - Mino, M.

AU - Motokawa, M.

AU - Knight, K.

AU - Ibberson, R.

AU - Forsyth, J. B.

AU - Bennington, S. M.

AU - Akimitsu, O.

AU - Fujita, J.

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AB - 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.

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