Abstracts 1999

Abstract of Publication No. 329

W. Henggeler, N. Cavadini, A. Furrer, H. U. Güdel, K. Krämer and H. Mutka
Magnetic excitations in the quantum spin system KCuCl3
ILL Annual Report 98, 22-23 (1999)      Full Text (PDF)      DOI-Link     

Abstract: The magnetic excitations in the double-chain compound KCuCl3 have been investigated by inelastic neutron scattering. Above an excitation gap of 2.6 meV well-defined modes are observed which are dispersive in all directions of reciprocal space. A model based on a nonmagnetic dimerised ground state and dispersive singlet-triplet excitations can quantitatively describe the excitations.

Last modified: 13.12.11 by Gabriela Frei