Spin excitations in stripe-ordered La2-xSrxNiO4 (x=0.275 and 1/3)
arXiv:cond-mat/0308630 · doi:10.1016/j.jmmm.2003.12.1121
Abstract
We report neutron scattering measurements of the spectrum of magnetic excitations in the stripe-ordered phase of La2-xSrxNiO4 (x=0.275 and 1/3). The propagating spin excitations follow a similar dispersion relation for the two compositions, but the line widths are broader for x=0.275 than for x=1/3.
2 pages, 2 figs. Presented at ICM'2003, to appear in J Magn Magn Mater