Excitations of the field-induced soliton lattice in CuGeO3

Details Excitations of the field-induced soliton lattice in CuGeO3 Excitations of the field-induced soliton lattice in CuGeO3

2000-08-14

arxiv.org/abs/cond-mat/0008202v1

Physics

Condensed Matter

5 pages, revtex, 4 figures (*.eps), win-zipped

Scientific paper

10.1103/PhysRevLett.87.177203

Here we report the first inelastic neutron scattering study of the magnetic excitations in the incommensurate phase of a spin-Peierls material. The results on CuGeO3 provide direct evidence of a finite excitation gap, two sharp magnetic excitation branches and a very low-lying excitation which is identified as a phason mode, the Goldstone mode of the incommensurate soliton lattice.

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