Electric Manipulation of Spin Relaxation Using the Spin Hall Effect
Kazuya AndoDepartment of Applied Physics and Physico-Informatics, Keio University, Yokohama 223-8522, Japan. [email protected]S. TakahashiCREST, Japan Science and Technology Agency, Kawaguchi, Saitama 332-0012, JapanK. HariiDepartment of Applied Physics and Physico-Informatics, Keio University, Yokohama 223-8522, JapanK. SasageDepartment of Applied Physics and Physico-Informatics, Keio University, Yokohama 223-8522, JapanJun’ichi IedaCREST, Japan Science and Technology Agency, Kawaguchi, Saitama 332-0012, JapanSadamichi MaekawaCREST, Japan Science and Technology Agency, Kawaguchi, Saitama 332-0012, JapanEiji SaitohDepartment of Applied Physics and Physico-Informatics, Keio University, Yokohama 223-8522, Japan
2008en
ABI
Abstract
Using the spin Hall effect, magnetization relaxation in a Ni_{81}Fe_{19}/Pt film is manipulated electrically. An electric current applied to the Pt layer exerts spin torque on the entire magnetization of the Ni81Fe19 layer via the macroscopic spin transfer induced by the spin Hall effect and modulates the magnetization relaxation in the Ni81Fe19 layer. This method allows us to tune the magnetization dynamics regardless of the film size without applying electric currents directly to the magnetic layer.
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