Intrinsic Spin-Orbit Torque Arising from the Berry Curvature in a Metallic-Magnet/Cu-Oxide Interface

Tenghua Gao, Alireza Qaiumzadeh, Hongyu An, Akira Musha, Yuito Kageyama, Ji Shi, Kazuya Ando

Research output: Contribution to journalArticle

6 Citations (Scopus)

Abstract

We report the observation of the intrinsic dampinglike spin-orbit torque (SOT) arising from the Berry curvature in metallic-magnet/CuOx heterostructures. We show that a robust dampinglike SOT, an order of magnitude larger than a fieldlike SOT, is generated in the heterostructure despite the absence of the bulk spin-orbit effect in the CuOx layer. Furthermore, by tuning the interfacial oxidation level, we demonstrate that the fieldlike SOT changes drastically and even switches its sign, which originates from oxygen-modulated spin-dependent disorder. These results provide important information for a fundamental understanding of the physics of the SOTs.

Original languageEnglish
Article number017202
JournalPhysical Review Letters
Volume121
Issue number1
DOIs
Publication statusPublished - 2018 Jul 6

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torque
magnets
curvature
orbits
oxides
solar optical telescope
switches
tuning
disorders
oxidation
physics
oxygen

ASJC Scopus subject areas

  • Physics and Astronomy(all)

Cite this

Intrinsic Spin-Orbit Torque Arising from the Berry Curvature in a Metallic-Magnet/Cu-Oxide Interface. / Gao, Tenghua; Qaiumzadeh, Alireza; An, Hongyu; Musha, Akira; Kageyama, Yuito; Shi, Ji; Ando, Kazuya.

In: Physical Review Letters, Vol. 121, No. 1, 017202, 06.07.2018.

Research output: Contribution to journalArticle

Gao, Tenghua ; Qaiumzadeh, Alireza ; An, Hongyu ; Musha, Akira ; Kageyama, Yuito ; Shi, Ji ; Ando, Kazuya. / Intrinsic Spin-Orbit Torque Arising from the Berry Curvature in a Metallic-Magnet/Cu-Oxide Interface. In: Physical Review Letters. 2018 ; Vol. 121, No. 1.
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