Efficient Spin Torques in Antiferromagnetic CoO/Pt Quantified by Comparing Field- and Current-Induced Switching

Autoren

L Baldrati
C Schmitt
O Gomonay
R Lebrun
R Ramos
E Saitoh
J Sinova
M Kläui

DOI

10.1103/physrevlett.125.077201

eISSN

1079-7114

ISSN

0031-9007

Ausgabe der Veröffentlichung

7

Zeitschrift

Physical Review Letters

Sprache

en

Artikelnummer

077201

Online publication date

2020

Status

Published online

Herausgeber

American Physical Society (APS)

Herausgeber URL

http://dx.doi.org/10.1103/physrevlett.125.077201

Datum der Datenerfassung

2021

Titel

Efficient Spin Torques in Antiferromagnetic <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mi>CoO</mml:mi><mml:mo>/</mml:mo><mml:mi>Pt</mml:mi></mml:math> Quantified by Comparing Field- and Current-Induced Switching

Ausgabe der Zeitschrift

125

Data source: Crossref

Abstract

We achieve current-induced switching in collinear insulating antiferromagnetic CoO/Pt, with fourfold in-plane magnetic anisotropy. This is measured electrically by spin Hall magnetoresistance and confirmed by the magnetic field-induced spin-flop transition of the CoO layer. By applying current pulses and magnetic fields, we quantify the efficiency of the acting current-induced torques and estimate a current-field equivalence ratio of 4×10^{-11} T A^{-1} m^{2}. The Néel vector final state (n⊥j) is in line with a thermomagnetoelastic switching mechanism for a negative magnetoelastic constant of the CoO.

Addresses

Institute of Physics, Johannes Gutenberg-University Mainz, 55128 Mainz, Germany.

Autoren

L Baldrati
C Schmitt
O Gomonay
R Lebrun
R Ramos
E Saitoh
J Sinova
M Kläui

DOI

10.1103/physrevlett.125.077201

eISSN

1079-7114

Externe Identifier

PubMed Identifier: 32857543

Funding acknowledgements

Graduate School of Excellence Materials Science In Mainz: DFG 266
H2020 Future and Emerging Technologies: 766566
European Research Council: 856538
Deutsche Forschungsgemeinschaft: A09
Deutsche Forschungsgemeinschaft: B12
Deutsche Forschungsgemeinschaft: SHARP 397322108
Deutsche Forschungsgemeinschaft: TRR 288—422213477
Grantová Agentura České Republiky: 19-28375X
ASPIN: 766566
H2020 Marie Skłodowska-Curie Actions: 793159
Horizon 2020 Framework Programme: 863155
Deutsche Forschungsgemeinschaft: A03
Deutsche Forschungsgemeinschaft: B02
Exploratory Research for Advanced Technology: JPMJER1402
Deutsche Forschungsgemeinschaft: A01
Deutsche Forschungsgemeinschaft: A11
Japan Society for the Promotion of Science: JP19H05600
Japan Society for the Promotion of Science: JP20K05297
H2020 Marie Skłodowska-Curie Actions: 75219
Japan Society for the Promotion of Science: JP26103005
Deutsche Forschungsgemeinschaft: TRR 173–268565370
Deutscher Akademischer Austauschdienst: 57334897

Open access

false

ISSN

0031-9007

Ausgabe der Veröffentlichung

7

Zeitschrift

Physical review letters

Sprache

eng

Medium

Print

Paginierung

077201

Datum der Veröffentlichung

2020

Status

Published

Datum der Datenerfassung

2020

Titel

Efficient Spin Torques in Antiferromagnetic CoO/Pt Quantified by Comparing Field- and Current-Induced Switching.

Sub types

Journal Article

Ausgabe der Zeitschrift

125

Data source: Europe PubMed Central

Abstract

We achieve current-induced switching in collinear insulating antiferromagnetic CoO/Pt, with fourfold in-plane magnetic anisotropy. This is measured electrically by spin Hall magnetoresistance and confirmed by the magnetic field-induced spin-flop transition of the CoO layer. By applying current pulses and magnetic fields, we quantify the efficiency of the acting current-induced torques and estimate a current-field equivalence ratio of 4×10^{-11} T A^{-1} m^{2}. The Néel vector final state (n⊥j) is in line with a thermomagnetoelastic switching mechanism for a negative magnetoelastic constant of the CoO.

Date of acceptance

2020

Autoren

L Baldrati
C Schmitt
O Gomonay
R Lebrun
R Ramos
E Saitoh
J Sinova
M Kläui

Autoren-URL

https://www.ncbi.nlm.nih.gov/pubmed/32857543

DOI

10.1103/PhysRevLett.125.077201

eISSN

1079-7114

Ausgabe der Veröffentlichung

7

Zeitschrift

Phys Rev Lett

Sprache

eng

Country

United States

Paginierung

077201

Datum der Veröffentlichung

2020

Status

Published

Titel

Efficient Spin Torques in Antiferromagnetic CoO/Pt Quantified by Comparing Field- and Current-Induced Switching.

Sub types

Journal Article

Ausgabe der Zeitschrift

125

Data source: PubMed

Author's licence

InCopyright

Autoren

Lorenzo Baldrati
Christin Schmitt
Olena Gomonay
Romain Lebrun
Rafael Ramos
Eiji Saitoh
Jairo Sinova
Mathias Kläui

Hosting institution

Universitätsbibliothek Mainz

Sammlungen

JGU-Publikationen

Resource version

Accepted version

DOI

10.1103/PhysRevLett.125.077201

File(s) embargoed

false

Open access

true

ISSN

0031-9007

Ausgabe der Veröffentlichung

7

Zeitschrift

Physical review letters

Schlüsselwörter

530 Physik
530 Physics

Sprache

eng

Open access status

Open Access

Paginierung

Art. 077201

Datum der Veröffentlichung

2020

Public URL

https://openscience.ub.uni-mainz.de/handle/20.500.12030/5259

Herausgeber

American Physical Society

Herausgeber URL

https://doi.org/10.1103/PhysRevLett.125.077201

Datum der Datenerfassung

2020

Datum, an dem der Datensatz öffentlich gemacht wurde

2020

Zugang

Public

Titel

Efficient spin torques in antiferromagnetic CoO/Pt quantified by comparing field- and current-induced switching

Ausgabe der Zeitschrift

125

Files

baldrati_l.-efficient_spin-20201026144747688.pdf

Data source: OPENSCIENCE.UB

Efficient Spin Torques in Antiferromagnetic CoO/Pt Quantified by Comparing Field- and Current-Induced Switching

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