CuGeO3 undergoes a transition from a spin-Peierls phase to an
incommensurate phase at a critical field of Hc≈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, and with
amplitudes that are broadly in accord with theoretical estimates. The magnetic
soliton width, Γ, and the field dependence of the incommensurability,
δksp, are found to agree well with theoretical predictions.Comment: 5 pages, 3 figure