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 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 | |
| State | Published - Aug 1 1995 |
| Externally published | Yes |