Switching of Perpendicular Magnetization via ac Spin-Orbit Torque

Gyungchoon Go, Seung Jae Lee, Kyung Jin Lee

Research output: Contribution to journalArticlepeer-review

3 Citations (Scopus)


We theoretically and numerically investigate the switching of perpendicular magnetization by ac spin-orbit torque. We find that the threshold switching current for ac spin-orbit torque is much smaller than that for dc spin-orbit torque. Moreover, the ac spin-orbit torque acts like an effective out-of-plane field in the rotating frame and thus allows field-free deterministic switching of perpendicular magnetization. The ac spin-orbit torque scheme will be useful for energy-efficient operation of spin-orbit torque devices.

Original languageEnglish
Article number034047
JournalPhysical Review Applied
Issue number3
Publication statusPublished - 2018 Sept 21

Bibliographical note

Funding Information:
This work was supported by Samsung electronics. K.-J.L. acknowledges support from the National Research Foundation of Korea (NRF) (Grants No. 2015M3D1A1070465 and No. 2017R1A2B2006119), the KU-KIST Graduate School of Converging Science and Technology Program, and the KIST Institutional Program (Project No. 2V05750). G.G. acknowledges support from the NRF under Grant No. 2016R1A6A3A11935881.

Publisher Copyright:
© 2018 American Physical Society.

ASJC Scopus subject areas

  • General Physics and Astronomy


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