Suppression of spin pumping in the presence of thin titanium interlayer

H. Nakayama, T. Tashiro, R. Takahashi, Y. Kajiwara, T. Ohtani, K. Ando, R. Iguchi, K. Uchida, T. Yoshino, E. Saitoh

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

1 Citation (Scopus)

Abstract

The inverse spin-Hall effect (ISHE), conversion of spin currents into charge currents, has recently been observed in paramagnetic metal/ferrimagnetic insulator bilayer films by means of the spin pumping. Here we investigate the ISHE induced by the spin pumping on Pt/Ti/Y 3Fe 5O 12 and Pt/Ti/BiY 2Fe 5O 12 films, where the Y 3Fe 5O 12 (BiY 2Fe 5O 12) and Pt layers are separated by thin Ti layer. In these systems, we measured electric voltage due to the ISHE in Pt/Ti/Y 3Fe 5O 12 (BiY 2Fe 5O 12) systems at room temperature. The experimental results show that the ISHE signal disappears in the Pt/Ti/Y 3Fe 5O 12 (BiY 2Fe 5O 12) systems. These results indicate that the spin pumping between Y 3Fe 5O 12 (BiY 2Fe 5O 12) and Ti layer is suppressed. This method enables us to suppress the spin currents without non-magnetic insulators.

Original languageEnglish
Title of host publicationMaterials Integration
Pages347-352
Number of pages6
DOIs
Publication statusPublished - 2012 Apr 18
EventInt. Symposium of GCOE: Materials Integration, in Conjunction with the 2nd Int. Symposium on Advanced Synthesis and Processing Technology for Materials, ASPT 2011 and the 8th Materials Science School for Young Scientists, KINKEN-WAKATE 2011 - Sendai, Japan
Duration: 2011 Dec 12011 Dec 2

Publication series

NameKey Engineering Materials
Volume508
ISSN (Print)1013-9826

Other

OtherInt. Symposium of GCOE: Materials Integration, in Conjunction with the 2nd Int. Symposium on Advanced Synthesis and Processing Technology for Materials, ASPT 2011 and the 8th Materials Science School for Young Scientists, KINKEN-WAKATE 2011
CountryJapan
CitySendai
Period11/12/111/12/2

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Keywords

  • Ferromagnetic resonance
  • Spin current
  • Spin pumping
  • Spin-Hall effect

ASJC Scopus subject areas

  • Materials Science(all)
  • Mechanics of Materials
  • Mechanical Engineering

Cite this

Nakayama, H., Tashiro, T., Takahashi, R., Kajiwara, Y., Ohtani, T., Ando, K., Iguchi, R., Uchida, K., Yoshino, T., & Saitoh, E. (2012). Suppression of spin pumping in the presence of thin titanium interlayer. In Materials Integration (pp. 347-352). (Key Engineering Materials; Vol. 508). https://doi.org/10.4028/www.scientific.net/KEM.508.347