Electric Manipulation of Spin Relaxation Using the Spin Hall Effect

K. Ando, S. Takahashi, K. Harii, K. Sasage, J. Ieda, S. Maekawa, and E. Saitoh
Phys. Rev. Lett. 101, 036601 – Published 18 July 2008

Abstract

Using the spin Hall effect, magnetization relaxation in a Ni81Fe19/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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  • Received 17 March 2008

DOI:https://doi.org/10.1103/PhysRevLett.101.036601

©2008 American Physical Society

Authors & Affiliations

K. Ando1,*, S. Takahashi2,3, K. Harii1, K. Sasage1, J. Ieda2,3, S. Maekawa2,3, and E. Saitoh1,4

  • 1Department of Applied Physics and Physico-Informatics, Keio University, Yokohama 223-8522, Japan
  • 2Institute for Materials Research, Tohoku University, Sendai 980-8577, Japan
  • 3CREST, Japan Science and Technology Agency, Kawaguchi, Saitama 332-0012, Japan
  • 4PRESTO, Japan Science and Technology Agency, Kawaguchi, Saitama 332-0012, Japan

  • *kazuya_ando@z8.keio.jp

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Issue

Vol. 101, Iss. 3 — 18 July 2008

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