Kavli Affiliate: Zheng Zhu
| First 5 Authors: Prasanta Muduli, Naëmi Leo, Mingran Xu, Zheng Zhu, Jorge Puebla
| Summary:
The spin-orbit field and interfacial exchange field are two major interface
phenomena, and the detection and manipulation of these fields can enable a
variety of nanoscale spintronics devices. Optimizing the interfacial exchange
field, which governs the spin-dependent scattering asymmetry at (ferromagnetic
insulator)-(normal metal) interfaces, will pave the way for next-generation
nanoscale, low-power insulator spintronics devices. Here, we demonstrate an
experimental pathway to detect an interfacial exchange field between insulating
ferromagnet EuS and non-magnetic Cu using an all-electrical method, and show
that the spin-dependent scattering at the common interface can lead to a
significant current-in-plane magnetoresistance in Py|Cu|EuS trilayer Hall-bar
devices. Our experiment suggests that simple measurements can be used to
experimentally detect the interfacial exchange field and thereby the magnetic
state of a ferromagnetic insulator.
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