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Concurrent magneto-optical imaging and magneto-transport readout of electrical switching of insulating antiferromagnetic thin films

Schreiber, F.*; Baldrati, L.*; Schmitt, C.*; Ramos, R.*; Saito, Eiji; Lebrun, R.*; Kl$"a$ui, M.*

We demonstrate stable and reversible current induced switching of large-area ($$>$$100 $$mu$$m$$^2$$) 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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Category:Physics, Applied

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