Application of direct and inverse Spin-Hall effects: Electric manipulation of Spin relaxation and electric detection of Spin currents

K. Ando, E. Saitoh

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

The spin-Hall effect (SHE) and the inverse spin-Hall effect (ISHE) coupled with magnetization dynamics were investigated using a simple Nisi Fe 19/Pt film. A spin current generated by magnetization dynamics was detected electrically using ISHE. The observed magnetic field angle dependence of the ISHE signal is well reproduced by a model calculation based on the dc spin pumping and ISHE. In the same system, we found that spin relaxation in the Nisi Fe19 layer is manipulated electrically using SHE. An electric current applied to the Pt layer exerts the spin torque on the entire magnetization of the Ni81 Fe19 layer via the macroscopic spin transfer induced by SHE, which modulates spin relaxation in the Nisi Fe19 layer. This spin-relaxation modulation enables quantitative measurements of spin currents without assuming any microscopic parameters.

Original languageEnglish
Title of host publicationProceedings of the 9th International Symposium on Foundations of Quantum Mechanics in the Light of New Technology, ISQM-Tokyo 2008
PublisherWorld Scientific Publishing Co. Pte Ltd
Pages61-68
Number of pages8
ISBN (Print)981428212X, 9789814282123
DOIs
Publication statusPublished - 2009 Jan 1
Event9th International Symposium on Foundations of Quantum Mechanics in the Light of New Technology, ISQM-Tokyo 2008 - Hatoyama, Saitama, Japan
Duration: 2008 Aug 252008 Aug 28

Publication series

NameProceedings of the 9th International Symposium on Foundations of Quantum Mechanics in the Light of New Technology, ISQM-Tokyo 2008

Other

Other9th International Symposium on Foundations of Quantum Mechanics in the Light of New Technology, ISQM-Tokyo 2008
CountryJapan
CityHatoyama, Saitama
Period08/8/2508/8/28

Keywords

  • Spin pumping
  • Spin torque
  • Spin-Hall effect

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics

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    Ando, K., & Saitoh, E. (2009). Application of direct and inverse Spin-Hall effects: Electric manipulation of Spin relaxation and electric detection of Spin currents. In Proceedings of the 9th International Symposium on Foundations of Quantum Mechanics in the Light of New Technology, ISQM-Tokyo 2008 (pp. 61-68). (Proceedings of the 9th International Symposium on Foundations of Quantum Mechanics in the Light of New Technology, ISQM-Tokyo 2008). World Scientific Publishing Co. Pte Ltd. https://doi.org/10.1142/9789814282130_0015