Full polarization analysis neutron scattering investigation of the spin wave excitations in yttrium iron garnet
The recent observation of spin Seebeck effect in magnetic insulator yttrium iron garnet (YIG) attracts much attention because of the possible application in the spintronics. We thus have been performing unpolarized and polarized neutron inelastic scattering on large single crystal sample of YIG to investigate the spin excitations at elevated temperatures close to Tc. Especially the polarization dependent inelastic scattering experiment clearly showed the opposite sign in the polarization of the acoustic and optical magnetic excitation mode in an applied magnetic field in this ferrimagnetic material. Since the temperature dependence of the spin Seebeck effect in YIG might be closely related to the thermal activation of the gapped optical mode at elevated temperatures in addition to the activation of the acoustic mode at low temperature thereby changing the spin transport properties, a detailed full-polarization analysis investigation on the magnetic excitation modes in ferrimagnetic YIG is urgently needed for the microscopic understanding of the spin Seebeck effect. We thus propose an full polarization analysis inelastic scattering experiment on YIG using IN20.
Please note that you will need to login with your ILL credentials to download the data.
Download DataThe recommended format for citing this dataset in a research publication is in the following format:
KAKURAI Kazuhisa; BOEHM Martin; BRUECKEL Thomas; ENDERLE Mechthild; Yusuke Nambu and SCHMALZL Karin. (2018). Full polarization analysis neutron scattering investigation of the spin wave excitations in yttrium iron garnet. Institut Laue-Langevin (ILL) doi:10.5291/ILL-DATA.4-01-1559
ILL has partnered with DataCite as the registration agency
for data persistent identifiers.