SPIN DYNAMICS OF THE SPIN-PEIERLS SYSTEM CUGEO3 AT VARIOUS TEMPERATURES

By using the advantages of a pulsed neutron technique, we have studied the spin dynamics of an inorganic spin-Peierls compound, CuGeO3. The S(Q, E) changes drastically on crossing the transition temperatures. T he low-lying triplet excitation which separates from the excitation co ntinuum have been confirmed in the dimerized phase. A detailed data an alysis on a two-dimensional S(Q, E) data could give a new opportunity to detect the effect of higher-order interactions on a spin-wave dispe rsion at various temperatures. (C) 1998 Elsevier Science B.V. All righ ts reserved.