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: Spin-orbit torque-assisted switching in magnetic insulator thin films with perpendicular magnetic anisotropy.
NATURE COMMUNICATIONS, 7. ISSN 2041-1723 (2016)

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Folyóiratcikk

Szerző azonosítók:

Név	ORCID	MTMT szerző azonosító
Li P
Liu T
Chang H
Kalitsov A
Zhang W
Csaba György		10057150
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

Absztrakt (kivonat):

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.

Folyóirat/kiadvány címe:

NATURE COMMUNICATIONS

Évszám:

2016

Kötet:

ISSN:

2041-1723

Intézmény:

Pázmány Péter Katolikus Egyetem

Kar:

Információs Technológiai és Bionikai Kar (2013.07.-)

Nyelv: