Electric current-spin current conversion device
An electric current-spin current conversion device according to the invention performs conversion between electric current and spin current utilizing the spin Hall effect or the inverse spin Hall effect of a 5d transition metal. A spin accumulation apparatus according to the invention includes a non-magnetic body in which injected spins are accumulated and an injection unit that injects spins into the non-magnetic body, wherein said injection unit comprises said electric current-spin current conversion device provided on said non-magnetic body, and an electric power source that supplies an electric current to said electric current-spin current conversion device in such a way that a spin current flowing toward said non-magnetic body is generated by the spin Hall effect.
1. An electric current-spin current conversion device characterized by performing conversion between electric current and spin current utilizing the spin Hall effect or the inverse spin Hall effect of a 5d transition metal oxide.
2. An electric current-spin current conversion device according to claim 1 , characterized in that said 5d transition metal oxide contains Ir.
3. A spin wave detection apparatus characterized by comprising:
a magnetic body;
a supply unit that supplies energy for generating a spin wave in said magnetic body; and
a detection unit that detects the spin wave generated in said magnetic body;
wherein said detection unit comprises an electric current-spin current conversion device according to claim 1 or 2 provided on said magnetic body, and a sensor that detects, as said spin wave, electric current generated by the inverse spin Hall effect of the electric current-spin current conversion device.
4. An electric current-spin current conversion device according to claim 1 , wherein the 5d transition metal oxide includes at least one of the following: ReO 3 , SrIrO 3 , CaIrO 3 , BaIrO 3 , and M x WO 3 (M is H, Li, Na, K, Rb, Cs, Ca, Sr, Ba, Ce, Eu, or Gd, and x=0.05-0.15).