Interface-induced field-like optical spin torque in a ferromagnet/heavy metal heterostructure

Satoshi Iihama, Kazuaki Ishibashi, Shigemi Mizukami

Research output: Contribution to journalArticlepeer-review

Abstract

Ferromagnetic/nonmagnetic heavy metal heterostructures have been widely utilized to efficiently control magnetization via electrical means. Here, we observed in-plane field-like torques induced by a circularly polarized laser pulse in a ferromagnet/nonmagnet heterostructure. The torques significantly increased with decreasing ferromagnetic layer thicknesses. The interfacial field-like optical spin torque was explained by the optical Rashba-Edelstein effect caused by the structural inversion symmetry breaking. This work will aid in the efficient optical manipulation of thin film nanomagnets using optical helicity.

Original languageEnglish
JournalUnknown Journal
Publication statusPublished - 2020 Oct 8

ASJC Scopus subject areas

  • General

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