Spin-orbit torque-driven current-induced domain wall motion in Gd-Fe magnetic wires

Yuichiro Kurokawa; Masakazu Wakae; Satoshi Sumi; Hiroyuki Awano; Kohei Ohnishi; Hiromi Yuasa

doi:10.7567/1347-4065/aafa91

Spin-orbit torque-driven current-induced domain wall motion in Gd-Fe magnetic wires

Yuichiro Kurokawa, Masakazu Wakae, Satoshi Sumi, Hiroyuki Awano, Kohei Ohnishi, Hiromi Yuasa

Research output: Contribution to journal › Article

Abstract

We fabricated Gd-Fe/Ta/sub. and W/Gd-Fe/Ta/sub. perpendicular magnetized magnetic wires and investigated current-induced domain wall motion (CIDWM) in them. The propagation field of the Gd-Fe wires is low (∼3 mT), and the wires were found to have a low threshold current density (∼3.1 ×10 ¹⁰ A m ^-2 ) of CIDWM. The directions of the CIDWM in Gd-Fe/Ta and W/Gd-Fe/Ta wires are opposite to each other, indicating that the CIDWM in both wires is driven by spin-orbit torque because the spin Hall torque generated by the Ta underlayer and W cap layer oppose each other.

Original language	English
Article number	030905
Journal	Japanese Journal of Applied Physics
Volume	58
Issue number	3
DOIs	https://doi.org/10.7567/1347-4065/aafa91
Publication status	Published - Mar 1 2019

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Domain walls

Induced currents

domain wall

torque

Orbits

Torque

wire

Wire

orbits

Threshold current density

threshold currents

caps

current density

propagation

All Science Journal Classification (ASJC) codes

Engineering(all)
Physics and Astronomy(all)

Cite this

Kurokawa, Y., Wakae, M., Sumi, S., Awano, H., Ohnishi, K., & Yuasa, H. (2019). Spin-orbit torque-driven current-induced domain wall motion in Gd-Fe magnetic wires. Japanese Journal of Applied Physics, 58(3), [030905]. https://doi.org/10.7567/1347-4065/aafa91

Spin-orbit torque-driven current-induced domain wall motion in Gd-Fe magnetic wires. / Kurokawa, Yuichiro; Wakae, Masakazu; Sumi, Satoshi; Awano, Hiroyuki; Ohnishi, Kohei ; Yuasa, Hiromi.

In: Japanese Journal of Applied Physics, Vol. 58, No. 3, 030905, 01.03.2019.

Research output: Contribution to journal › Article

Kurokawa, Y, Wakae, M, Sumi, S, Awano, H, Ohnishi, K & Yuasa, H 2019, 'Spin-orbit torque-driven current-induced domain wall motion in Gd-Fe magnetic wires' Japanese Journal of Applied Physics, vol. 58, no. 3, 030905. https://doi.org/10.7567/1347-4065/aafa91

Kurokawa Y, Wakae M, Sumi S, Awano H, Ohnishi K , Yuasa H. Spin-orbit torque-driven current-induced domain wall motion in Gd-Fe magnetic wires. Japanese Journal of Applied Physics. 2019 Mar 1;58(3). 030905. https://doi.org/10.7567/1347-4065/aafa91

Kurokawa, Yuichiro ; Wakae, Masakazu ; Sumi, Satoshi ; Awano, Hiroyuki ; Ohnishi, Kohei ; Yuasa, Hiromi. / Spin-orbit torque-driven current-induced domain wall motion in Gd-Fe magnetic wires. In: Japanese Journal of Applied Physics. 2019 ; Vol. 58, No. 3.

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10.7567/1347-4065/aafa91