We demonstrate stable and reversible current induced switching of large-area (>100 μm2) antiferromagnetic domains in NiO/Pt by performing concurrent transport and magneto-optical imaging measurements in an adapted Kerr microscope. By correlating the magnetic images of the antiferromagnetic domain changes and magneto-transport signal response in these current-induced switching experiments, we disentangle magnetic and non-magnetic contributions to the transport signal. Our table-top approach establishes a robust procedure to subtract the non-magnetic contributions in the transport signal and extract the spin-Hall magnetoresistance response associated with the switching of the antiferromagnetic domains, enabling one to deduce details of the antiferromagnetic switching from simple transport measurements.
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24 August 2020
Research Article|
August 24 2020
Concurrent magneto-optical imaging and magneto-transport readout of electrical switching of insulating antiferromagnetic thin films
F. Schreiber;
F. Schreiber
1
Institute of Physics, Johannes Gutenberg-University Mainz
, 55128 Mainz, Germany
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L. Baldrati
;
L. Baldrati
a)
1
Institute of Physics, Johannes Gutenberg-University Mainz
, 55128 Mainz, Germany
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C. Schmitt;
C. Schmitt
1
Institute of Physics, Johannes Gutenberg-University Mainz
, 55128 Mainz, Germany
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R. Ramos
;
R. Ramos
2
WPI-Advanced Institute for Materials Research, Tohoku University
, Sendai 980-8577, Japan
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E. Saitoh;
E. Saitoh
2
WPI-Advanced Institute for Materials Research, Tohoku University
, Sendai 980-8577, Japan
3
Institute for Materials Research, Tohoku University
, Sendai 980-8577, Japan
4
Advanced Science Research Center, Japan Atomic Energy Agency
, Tokai 319-1195, Japan
5
Center for Spintronics Research Network, Tohoku University
, Sendai 980-8577, Japan
6
Department of Applied Physics, The University of Tokyo
, Tokyo 113-8656, Japan
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R. Lebrun
;
R. Lebrun
a)
1
Institute of Physics, Johannes Gutenberg-University Mainz
, 55128 Mainz, Germany
7
Unité Mixte de Physique CNRS, Thales, University Paris-Sud, Université Paris-Saclay
, Palaiseau 91767, France
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Appl. Phys. Lett. 117, 082401 (2020)
Article history
Received:
April 24 2020
Accepted:
July 09 2020
Citation
F. Schreiber, L. Baldrati, C. Schmitt, R. Ramos, E. Saitoh, R. Lebrun, M. Kläui; Concurrent magneto-optical imaging and magneto-transport readout of electrical switching of insulating antiferromagnetic thin films. Appl. Phys. Lett. 24 August 2020; 117 (8): 082401. https://doi.org/10.1063/5.0011852
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