Spin-orbit torque-assisted switching in magnetic insulator thin films with perpendicular magnetic anisotropy

Li P

Liu T

Chang H

Kalitsov A

Zhang W

Csaba György

Li W

Richardson D

DeMann A

Rimal G

Dey H

Jiang JS

Porod W

Field SB

Tang J

Marconi MC

Hoffmann A

Mryasov O

Wu M

2016

01.06.03. Biokémia és molekuláris biológia

01.06.07. Genetika és örökléstan

As an in-plane charge current flows in a heavy metal film with spin-orbit coupling, it produces a torque on and thereby switches the magnetization in a neighbouring ferromagnetic metal film. Such spin-orbit torque (SOT)-induced switching has been studied extensively in recent years and has shown higher efficiency than switching using conventional spin-transfer torque. Here we report the SOT-assisted switching in heavy metal/magnetic insulator systems. The experiments used a Pt/BaFe12O19 bilayer where the BaFe12O19 layer exhibits perpendicular magnetic anisotropy. As a charge current is passed through the Pt film, it produces a SOT that can control the up and down states of the remnant magnetization in the BaFe12O19 film when the film is magnetized by an in-plane magnetic field. It can reduce or increase the switching field of the BaFe12O19 film by as much as about 500 Oe when the film is switched with an out-of-plane field.

angol

angol

Folyóiratcikk

PeerReviewed

text

https://publikacio.ppke.hu/id/eprint/1823/1/ncomms2016.pdf

Li P; Liu T; Chang H; Kalitsov A; Zhang W; Csaba György; Li W; Richardson D; DeMann A; Rimal G; Dey H; Jiang JS; Porod W; Field SB; Tang J; Marconi MC; Hoffmann A; Mryasov O; Wu M: Spin-orbit torque-assisted switching in magnetic insulator thin films with perpendicular magnetic anisotropy. NATURE COMMUNICATIONS, 7. ISSN 2041-1723 (2016)

MTMT:3127671 10.1038/ncomms12688

https://publikacio.ppke.hu/id/eprint/1823/

https://doi.org/10.1038/ncomms12688

MTMT:3127671 10.1038/ncomms12688