Nonlocal orbital torques in magnetic multilayers

Abstract We investigate current-induced torques in Ni/Ti/Fe/Ti multilayers. In the multilayers, we find that the damping-like torque acting on the Ni magnetization increases with the thickness of the bottom Ti layer, despite the negligible spin Hall conductivity of Ti and the presence of the Fe inte...

Full description

Saved in:
Bibliographic Details
Published inApplied physics express Vol. 16; no. 4; pp. 43001 - 43004
Main Authors Taniguchi, Mari, Hayashi, Hiroki, Soya, Nozomi, Ando, Kazuya
Format Journal Article
LanguageEnglish
Published IOP Publishing 01.04.2023
Subjects
spin current
spin orbit torque
spin torque ferromagnetic resonance
spintronics
Online AccessGet full text

Cover

More Information
Summary:Abstract We investigate current-induced torques in Ni/Ti/Fe/Ti multilayers. In the multilayers, we find that the damping-like torque acting on the Ni magnetization increases with the thickness of the bottom Ti layer, despite the negligible spin Hall conductivity of Ti and the presence of the Fe interlayer that effectively absorbs the transverse spins. The nonlocal nature of the observed torque is consistent with the orbital torque arising from the orbital Hall effect in the Ti layer and orbital transport through the Fe layer. This observation highlights the unique features of the orbital currents, offering enhanced flexibility in the design of spintronic devices.
Bibliography:APEX-107189.R1
ISSN:1882-0778
1882-0786
DOI:10.35848/1882-0786/accb3e