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. TakahashiInstitute for Materials Research, Tohoku University, Sendai 980-8577, 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 IedaInstitute for Materials Research, Tohoku University, Sendai 980-8577, JapanSadamichi MaekawaInstitute for Materials Research, Tohoku University, Sendai 980-8577, JapanEiji SaitohPRESTO, Japan Science and Technology Agency, Kawaguchi, Saitama 332-0012, Japan
2008en
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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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