Autoresonant magnetization switching by spin-orbit torques

Gyungchoon Go; Seung Jae Lee; Kyung Jin Lee

doi:10.1103/PhysRevB.95.184401

Autoresonant magnetization switching by spin-orbit torques

Gyungchoon Go, Seung Jae Lee, Kyung Jin Lee

Research output: Contribution to journal › Article › peer-review

2 Citations (Scopus)

Abstract

Autoresonance is a self-sustained resonance mechanism due to a driving force whose frequency monotonically varies with time. We theoretically show that the autoresonance mechanism allows an efficient switching of perpendicular magnetization by spin-orbit spin-transfer torques. We find that a threshold current for the autoresonant switching can be much smaller than that of conventional spin-orbit torque switching driven by a DC current. Moreover, the suggested scheme allows fully deterministic switching without the help of any external field.

Original language	English
Article number	184401
Journal	Physical Review B
Volume	95
Issue number	18
DOIs	https://doi.org/10.1103/PhysRevB.95.184401
Publication status	Published - 2017 May 2

Bibliographical note

Funding Information:
K.-J.L. acknowledges support by the National Research Foundation of Korea (NRF) under Grants No. 2015M3D1A1070465 and No. 2017R1A2B2006119. G.G. acknowledges support by the NRF under Grant No. 2016R1A6A3A11935881.

Publisher Copyright:
©2017 American Physical Society.

Copyright:
Copyright 2019 Elsevier B.V., All rights reserved.

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Condensed Matter Physics

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10.1103/PhysRevB.95.184401

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abstract = "Autoresonance is a self-sustained resonance mechanism due to a driving force whose frequency monotonically varies with time. We theoretically show that the autoresonance mechanism allows an efficient switching of perpendicular magnetization by spin-orbit spin-transfer torques. We find that a threshold current for the autoresonant switching can be much smaller than that of conventional spin-orbit torque switching driven by a DC current. Moreover, the suggested scheme allows fully deterministic switching without the help of any external field.",

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AU - Lee, Seung Jae

AU - Lee, Kyung Jin

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Y1 - 2017/5/2

N2 - Autoresonance is a self-sustained resonance mechanism due to a driving force whose frequency monotonically varies with time. We theoretically show that the autoresonance mechanism allows an efficient switching of perpendicular magnetization by spin-orbit spin-transfer torques. We find that a threshold current for the autoresonant switching can be much smaller than that of conventional spin-orbit torque switching driven by a DC current. Moreover, the suggested scheme allows fully deterministic switching without the help of any external field.

AB - Autoresonance is a self-sustained resonance mechanism due to a driving force whose frequency monotonically varies with time. We theoretically show that the autoresonance mechanism allows an efficient switching of perpendicular magnetization by spin-orbit spin-transfer torques. We find that a threshold current for the autoresonant switching can be much smaller than that of conventional spin-orbit torque switching driven by a DC current. Moreover, the suggested scheme allows fully deterministic switching without the help of any external field.

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Autoresonant magnetization switching by spin-orbit torques

Abstract

Bibliographical note

ASJC Scopus subject areas

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