Neutron scattering study of the field-induced soliton lattice in CuGeO3
CuGeO3 undergoes a transition from a spin-Peierls phase to an incommensurate phase at a critical field of H-c approximate to 12.5 T. In the high-field phase a lattice of solitons forms, with both structural and magnetic components, and these have been studied using neutron scattering techniques. Our results provide direct evidence for a long-ranged magnetic soliton structure which has both staggered and uniform magnetizations with amplitudes that are broadly in accord with theoretical estimates. The magnetic soliton width Gamma(m) and the field dependence of the incommensurability delta k(SP) are found to agree well with theoretical predictions.
Riso Natl Lab, Condensed Matter Phys & Chem Dept, DK-4000 Roskilde, Denmark. Univ Saarlandes, D-6600 Saarbrucken, Germany. CEA, CENG, DRFMC, Grenoble, France. Univ Paris Sud, Chim Solide Lab, Orsay, France. BENSC, Berlin, Germany. Ronnow, HM, Riso Natl Lab, Condensed Matter Phys & Chem Dept, DK-4000 Roskilde, Denmark.
Record created on 2007-01-24, modified on 2016-08-08