Spin–orbit torque switching of a ferromagnet with picosecond electrical pulses - Archive ouverte HAL Access content directly
Journal Articles Nature Electronics Year : 2020

Spin–orbit torque switching of a ferromagnet with picosecond electrical pulses

(1) , (1) , (2) , (1) , (1) , (3) , (2) , (1) , (1) , (1) , (1) , (4) , (1) , (2) , (3) , (1)
1
2
3
4
S. Petit-Watelot
Grégory Malinowski
Stéphane Mangin
Michel Hehn
J. Gorchon

Abstract

The development of approaches that can efficiently control the magnetization of magnetic materials is central to the creation of fast and low-power spintronic devices. Spin transfer torque can be used to electrically manipulate magnetic order in devices, but is typically limited to nanosecond timescales. Alternatively, spin–orbit torque can be employed, and switching with current pulses down to ~200 ps has been demonstrated. However, the upper limit to magnetization switching speed remains unestablished. Here, we show that photoconductive switches can be used to apply 6-ps-wide electrical pulses and deterministically switch the out-of-plane magnetization of a common thin cobalt film via spin–orbit torque. We probe the ultrafast magnetization dynamics due to spin–orbit torques with sub-picosecond resolution using the time-resolved magneto-optical Kerr effect (MOKE). We also estimate that the magnetization switching consumes less than 50 pJ in micrometre-sized devices.
Fichier principal
Vignette du fichier
Manuscript_Version2a.pdf (3.56 Mo) Télécharger le fichier
Origin : Files produced by the author(s)
Loading...

Dates and versions

hal-02988288 , version 1 (04-11-2020)

Identifiers

Cite

Kaushalya Jhuria, Julius Hohlfeld, Akshay Pattabi, Elodie Martin, Aldo Ygnacio Arriola Córdova, et al.. Spin–orbit torque switching of a ferromagnet with picosecond electrical pulses. Nature Electronics, 2020, ⟨10.1038/s41928-020-00488-3⟩. ⟨hal-02988288⟩
443 View
304 Download

Altmetric

Share

Gmail Facebook Twitter LinkedIn More