93 citations · 935 across the 30 of their papers we have counts for
6 papers · 1 filter
Magnon-magnon interactions in the Spin-Peierls compound CuGeO_3
C. Gros, W. Wenzel, A. Fledderjohann +6
In a magnetic substance the gap in the Raman spectrum, Delta_R, is approximatively twice the value of the neutron scattering gap, Delta_S, if the the magnetic excitations (magnons)…
Substitution effects on spin fluctuations in the spin-Peierls compound CuGeO_3
M. Fischer, P. Lemmens, G. Güntherodt +4
Using Raman scattering we studied the effect of substitutions on 1D spin fluctuations in CuGeO_3 observed as a spinon continuum in frustration induced exchange scattering. For temp…
The J_1-J_2 model revisited : Phenomenology of CuGeO_3
V. N. Muthukumar, Claudius Gros, Roser Valenti +6
We present a mean field solution of the antiferromagnetic Heisenberg chain with nearest (J_1) and next to nearest neighbor (J_2) interactions. This solution provides a way to estim…
Electronic Raman scattering in the single-CuO2 layered superconductor Tl2Ba2CuO6+x
L. V. Gasparov, P. Lemmens, M. Brinkmann +2
Electronic Raman scattering in Tl-2201 has been investigated in order to test whether the scattering cross-section in high temperature superconductors depends on the number of CuO2…
Frustration induced Raman scattering in CuGeO_3
V. N. Muthukumar, Claudius Gros, Wolfgang Wenzel +7
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 b…
Investigation of the Spin-Peierls transition in CuGeO_3 by Raman scattering
P. Lemmens, B. Eisener, M. Brinkmann +7
Raman experiments on the spin-Peierls compound CuGeO and the substituted (Cu,Zn)GeO and Cu(Ge,Ga)O compounds were performed in order to investi…