Longitudinal magnetic excitation in KCuCl3 studied by Raman scattering under hydrostatic pressures
arXiv:1209.0235 · doi:10.1088/1742-6596/400/3/032042
Abstract
We measure Raman scattering in an interacting spin-dimer system KCuCl3 under hydrostatic pressures up to 5 GPa mediated by He gas. In the pressure-induced quantum phase, we observe a one-magnon Raman peak, which originates from the longitudinal magnetic excitationand is observable through the second-order exchange interaction Raman process. We report the pressure dependence of the frequency, halfwidth and Raman intensity of this mode.
4 pages, 3 figures, inpress in JPCS as a proceeding of LT26