TY - JOUR
T1 - Spin current and spin Hall effect in metallic nano-structures
AU - Otani, Y.
AU - Kimura, T.
N1 - Funding Information:
The authors would like to thank Prof. S. Katsumoto and Prof. Y. Iye at ISSP, University of Tokyo, for lithography facilities. This work was supported in part by the Sumitomo Foundation.
PY - 2008/7
Y1 - 2008/7
N2 - Laterally configured ferromagnetic/nonmagnetic multiterminal structures have great potential for developing future spintronic devices. We demonstrate two kinds of novel spintronic devices. One is a lateral spin valve with noncollinear dual spin injectors by which the direction of the spin accumulation in a nonmagnetic metal can be changed by varying the currents injected by two spin injectors. The other is a transformer between spin and charge currents using the spin Hall effect. A large spin Hall conductivity of 260 S/cm at room temperature, which is 104 times larger than that in semiconductor systems, is found in the Pt wire. We also demonstrate the reciprocal relation between the spin and charge currents. Temperature dependence of the spin Hall conductivity is also discussed.
AB - Laterally configured ferromagnetic/nonmagnetic multiterminal structures have great potential for developing future spintronic devices. We demonstrate two kinds of novel spintronic devices. One is a lateral spin valve with noncollinear dual spin injectors by which the direction of the spin accumulation in a nonmagnetic metal can be changed by varying the currents injected by two spin injectors. The other is a transformer between spin and charge currents using the spin Hall effect. A large spin Hall conductivity of 260 S/cm at room temperature, which is 104 times larger than that in semiconductor systems, is found in the Pt wire. We also demonstrate the reciprocal relation between the spin and charge currents. Temperature dependence of the spin Hall conductivity is also discussed.
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U2 - 10.1109/TMAG.2008.924535
DO - 10.1109/TMAG.2008.924535
M3 - Article
AN - SCOPUS:45849102749
SN - 0018-9464
VL - 44
SP - 1911
EP - 1915
JO - IEEE Transactions on Magnetics
JF - IEEE Transactions on Magnetics
IS - 7
M1 - 4544927
ER -