Large spin current injection in nano-pillar-based lateral spin valve

Tatsuya Nomura, Kohei Ohnishi, Takashi Kimura

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

1 Citation (Scopus)

Abstract

We have investigated the influence of the injection of a large pure spin current on a magnetization process of a non-locally located ferromagnetic dot in nano-pillar-based lateral spin valves. Here, we prepared two kinds of the nano-pillar-type lateral spin valve based on Py nanodots and CoFeAl nanodots fabricated on a Cu film. In the Py/Cu lateral spin valve, although any significant change of the magnetization process of the Py nanodot has not been observed at room temperature. The magnetization reversal process is found to be modified by injecting a large pure spin current at 77 K. Switching the magnetization by the nonlocal spin injection has also been demonstrated at 77 K. In the CoFeAl/Cu lateral spin valve, a room temperature spin valve signal was strongly enhanced from the Py/Cu lateral spin valve because of the highly spin-polarized CoFeAl electrodes. The room temperature nonlocal switching has been demonstrated in the CoFeAl/Cu lateral spin valve.

Original languageEnglish
Title of host publicationFrontiers in Materials Science, FMS 2015
Subtitle of host publicationProceedings of the 2nd International Symposium on Frontiers in Materials Science
EditorsMasato Yoshiya, Nam-Nhat Hoang, Markus Munzenberg, Tomoyuki Yamamoto
PublisherAmerican Institute of Physics Inc.
ISBN (Electronic)9780735414211
DOIs
Publication statusPublished - Aug 26 2016
Event2nd International Symposium on Frontiers in Materials Science, FMS 2015 - Tokyo, Japan
Duration: Nov 19 2015Nov 21 2015

Publication series

NameAIP Conference Proceedings
Volume1763
ISSN (Print)0094-243X
ISSN (Electronic)1551-7616

Other

Other2nd International Symposium on Frontiers in Materials Science, FMS 2015
CountryJapan
CityTokyo
Period11/19/1511/21/15

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy(all)

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  • Cite this

    Nomura, T., Ohnishi, K., & Kimura, T. (2016). Large spin current injection in nano-pillar-based lateral spin valve. In M. Yoshiya, N-N. Hoang, M. Munzenberg, & T. Yamamoto (Eds.), Frontiers in Materials Science, FMS 2015: Proceedings of the 2nd International Symposium on Frontiers in Materials Science [020011] (AIP Conference Proceedings; Vol. 1763). American Institute of Physics Inc.. https://doi.org/10.1063/1.4961344