Detection of Spin Transfer from Metal to Molecule by Magnetoresistance Measurement

Hiromu Gamou, Koki Shimose, Ryoto Enoki, Emi Minamitani, Akitoshi Shiotari, Yoshinori Kotani, Kentaro Toyoki, Tetsuya Nakamura, Yoshiaki Sugimoto, Makoto Kohda, Junsaku Nitta, Shinji Miwa

Research output: Contribution to journalArticle

Abstract

Localized electronic spin state in molecules has a relatively long spin lifetime and has thus attracted much attention. In this study, we characterize the magnetoresistance of a system comprising Pt and Fe(II)-phthalocyanine (FePc) molecules. The magnetoresistance measurement with the weak antilocalization analysis reveals that a magnetic moment in FePc acts as magnetic impurities for conduction electrons in Pt. Moreover, we find that the magnetoresistance involves a component that possesses the same symmetry as spin-Hall magnetoresistance. These results reveal the spin-angular momentum transfer from metallic Pt to a magnetic moment in FePc molecules, which can be used as a spin torque in a molecular system.

Original languageEnglish
Pages (from-to)75-80
Number of pages6
JournalNano Letters
Volume20
Issue number1
DOIs
Publication statusPublished - 2020 Jan 8

Keywords

  • Molecular spintronics
  • phthalocyanine
  • spin transfer
  • spin-Hall magnetoresistance
  • spinterface
  • weak antilocalization

ASJC Scopus subject areas

  • Bioengineering
  • Chemistry(all)
  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanical Engineering

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  • Cite this

    Gamou, H., Shimose, K., Enoki, R., Minamitani, E., Shiotari, A., Kotani, Y., Toyoki, K., Nakamura, T., Sugimoto, Y., Kohda, M., Nitta, J., & Miwa, S. (2020). Detection of Spin Transfer from Metal to Molecule by Magnetoresistance Measurement. Nano Letters, 20(1), 75-80. https://doi.org/10.1021/acs.nanolett.9b03110