Neutron Brillouin scattering with pulsed spallation neutron source - spin-wave excitations from ferromagnetic powder samples -
Strongly Correlated Electrons
2015-06-11 v1
Abstract
Neutron Brillouin scattering (NBS) method was developed using a pulsed spallation neutron source, and the feasibility of NBS was demonstrated by observing ferromagnetic spin waves in LaSrMnO and SrRuO powders. Gapless spin-wave excitations were observed in LaSrMnO, which were continuously extended to the lower scattering vector from previous results using single crystals. The novel result is a well-defined quadratic dependence in the spin-wave dispersion curve with a large energy gap in SrRuO indicating robust spin-orbit coupling.
Keywords
Cite
@article{arxiv.1209.1780,
title = {Neutron Brillouin scattering with pulsed spallation neutron source - spin-wave excitations from ferromagnetic powder samples -},
author = {S. Itoh and Y. Endoh and T. Yokoo and D. Kawana and Y. Kaneko and Y. Tokura and M. Fujita},
journal= {arXiv preprint arXiv:1209.1780},
year = {2015}
}