Interfacial spin-orbit torque and spin transparency in Co/Pt bilayer

Hiroyuki Moriya, Akira Musha, Kazuya Ando

Research output: Contribution to journalArticlepeer-review

Abstract

We show that interfacial spin–orbit coupling is an efficient source of spin-orbit torques in a Co/Pt bilayer, a prototypical spin-orbitronic device. We find that the spin–orbit coupling at the Co/Pt interface can be effectively manipulated by inserting a thin TiN layer. We show that the strong spin–orbit coupling at the Co/Pt interface enables efficient generation of interfacial spin-orbit torques, as well as suppresses bulk spin-orbit torques, resulting in the dominance of the interfacial contribution in the generation of the spin-orbit torques. This result provides an important information for developing efficient spin-orbitronic devices based on the interfacial spin–orbit coupling.

Original languageEnglish
Article number063001
JournalApplied Physics Express
Volume14
Issue number6
DOIs
Publication statusPublished - 2021 Jun

ASJC Scopus subject areas

  • Engineering(all)
  • Physics and Astronomy(all)

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