133 citations · 693 across the 21 of their papers we have counts for
7 papers · 1 filter
Angular momentum compensation manipulation to room temperature of the ferrimagnet HoDyFeO detected by the Barnett effect
Masaki Imai, Hiroyuki Chudo, Masao Ono +5
We demonstrate that the angular momentum compensation temperature , at which the net angular momentum in the sample disappears, can be controlled in HoFeO by pa…
Dirac-Surface-State Modulated Spin Dynamics in a Ferrimagnetic Insulator at Room Temperature
Chi Tang, Qi Song, Cui-Zu Chang +10
This work demonstrates dramatically modified spin dynamics of magnetic insulator (MI) by the spin-momentum locked Dirac surface states of the adjacent topological insulator (TI) wh…
Observation of gyromagnetic reversal
Masaki Imai, Yudai Ogata, Hiroyuki Chudo +6
We report direct observation of gyromagnetic reversal, which is the sign change of gyromagnetic ratio in a ferrimagnet HoFeO, by using the Barnett effect measurement…
Spin transport in half-metallic ferromagnets
Y. Ohnuma, M. Matsuo, S. Maekawa
We theoretically investigate spin transport in half-metallic ferromagnets at finite temperatures. The side-jump and skew-scattering contributions to spin Hall conductivity are deri…
Magnon instability driven by heat current in magnetic bilayers
Yuichi Ohnuma, Hiroto Adachi, Eiji Saitoh +1
We theoretically demonstrate that, in a ferromagnet/paramagnet bilayer, a magnon instability accompanied by a gigahertz microwave emission can be driven simply by means of a temper…
Enhanced DC Spin Pumping into a Fluctuating Ferromagnet near Tc
Yuichi Ohnuma, Hiroto Adachi, Eiji Saitoh +1
A linear-response formulation of the dc spin pumping, i.e., a spin injection from a precessing ferromagnet into an adjacent spin sink, is developed in view of describing many-body…
Spin Seebeck effect in antiferromagnets and compensated ferrimagnets
Yuichi Ohnuma, Hiroto Adachi, Eiji Saitoh +1
We theoretically investigate the spin Seebeck effect (SSE) in antiferromagnets and ferrimagnets, and show that the SSE vanishes in antiferromagnets but survives in ferrimagnets eve…