Additive Dzyaloshinskii–Moriya interaction in Pt/Co/Re films

Akiyo Nomura; Tenghua Gao; Satoshi Haku; Kazuya Ando

doi:10.1063/5.0077683

AIP Advances (Jan 2022)

Additive Dzyaloshinskii–Moriya interaction in Pt/Co/Re films

Akiyo Nomura,
Tenghua Gao,
Satoshi Haku,
Kazuya Ando

Affiliations

Akiyo Nomura: Department of Applied Physics and Physico-Informatics, Keio University, Yokohama 223-8522, Japan
Tenghua Gao: Department of Applied Physics and Physico-Informatics, Keio University, Yokohama 223-8522, Japan
Satoshi Haku: Department of Applied Physics and Physico-Informatics, Keio University, Yokohama 223-8522, Japan
Kazuya Ando: Department of Applied Physics and Physico-Informatics, Keio University, Yokohama 223-8522, Japan

DOI: https://doi.org/10.1063/5.0077683
Journal volume & issue: Vol. 12, no. 1
pp. 015215 – 015215-5

Abstract

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We report the Dzyaloshinskii–Moriya interaction (DMI) in Pt/Co/Re films. By measuring the current-induced hysteresis loop shift, we find that the interfacial DMI in the Pt/Co/Re structure is 2.1 pJ/m, which is stronger than that in Ir/Co/Pt asymmetric multilayers. The large DMI in this system can be attributed to an additive DMI at the Pt/Co and Co/Re interfaces; the Co/Re interface hosts a large DMI whose sign is the same as that at the Pt/Co interface. The additive DMI due to the large DMI at the Co/Re interface is consistent with theoretical predictions. The result provides a way to control the formation of chiral spin textures, such as magnetic skyrmions and chiral domain walls.

Published in AIP Advances

ISSN: 2158-3226 (Online)
Publisher: AIP Publishing LLC
Country of publisher: United States
LCC subjects: Science: Physics
Website: http://aipadvances.aip.org/

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