Frustration induced Raman scattering in CuGeO_3
Condensed Matter
2009-10-28 v1
Abstract
We present experimental data for the Raman intensity in the spin-Peierls compound CuGeO_3 and theoretical calculations from a one-dimensional frustrated spin model. The theory is based on (a) exact diagonalization and (b) a recently developed solitonic mean field theory. We find good agreement between the 1D-theory in the homogeneous phase and evidence for a novel dimerization of the Raman operator in the spin-Peierls state. Finally we present evidence for a coupling between the interchain exchange, the spin-Peierls order parameter and the magnetic excitations along the chains.
Keywords
Cite
@article{arxiv.cond-mat/9608106,
title = {Frustration induced Raman scattering in CuGeO_3},
author = {V. N. Muthukumar and Claudius Gros and Wolfgang Wenzel and Roser Valenti and P. Lemmens and B. Eisener and G. Güntherodt and M. Weiden and C. Geibel and F. Steglich},
journal= {arXiv preprint arXiv:cond-mat/9608106},
year = {2009}
}
Comments
Phys. Rev. B, Rapid Comm, in Press