Lattice dynamics of CuGeO${}_3$ : inelastic neutron scattering and model calculations

Abstract

The lattice dynamics in CuGeO${}_3$ has been analyzed by the combination of inelastic neutron scattering studies and lattice dynamical model calculations. We report an almost complete set of dispersion curves along the three orthorhombic directions and along [101]. The dispersion of branches associated with the modes directly involved in the spin-Peierls transition allows to explain the particular propagation vector of the structural distortion in the dimerized phase.

17 pages, 14 figures

Cited by in corpus (9)

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• Strong-coupling magnetophononics: Self-blocking, phonon-bitriplons, and spin-band engineering
• Infrared phonon spectrum of the tetragonal helimagnet Ba${}_2$CuGe${}_2$O${}_7$
• Spin Excitation Assisted by Non-Softening Phonon for Spin-Peierls Model
• Pulsed Magnetophononics in Gapped Quantum Magnets
• Phonon spectrum in the spin-Peierls phase of CuGeO${}_3$