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20 August 2020 Interfacial spin-orbit coupling: A platform for superconducting spintronics
Farkhad G. Aliev, Cesar Gonzalez-Ruano, Diego Caso, Isidoro Martinez, Petra Högl, Lina Johnsen, Coriolan Tiusan, Michel Hehn, Alex Matos-Abiague, Jaroslav Fabian, Niladri Banerjee, Jacob Linder, Igor Žutić
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Proceedings Volume 11470, Spintronics XIII; 1147004 (2020) https://doi.org/10.1117/12.2569161
Event: SPIE Nanoscience + Engineering, 2020, Online Only
Abstract
Unlike common expectation that superconducting spintronics and desirable long-range triplet (LRT) proximity effects require complex ferromagnetic multilayers, relying on noncollinear/spiral magnetization or half-metals, we propose a new platform compatible with commercial spintronics. We experimentally demonstrate that interfacial spin-orbit coupling (SOC) and symmetry-filtering in all-epitaxial Fe/MgO/V junctions, cooled bellow Tc for vanadium, provide a thousand-fold increase in tunneling anisotropic magnetoresistance, supporting the LRT. The bistable magnetic anisotropy allows us to identify the SOC origin of the observed MR. Such MR reaches approximately 20% without an applied magnetic field and could be further increased for large magnetic fields that support vortices.
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Farkhad G. Aliev, Cesar Gonzalez-Ruano, Diego Caso, Isidoro Martinez, Petra Högl, Lina Johnsen, Coriolan Tiusan, Michel Hehn, Alex Matos-Abiague, Jaroslav Fabian, Niladri Banerjee, Jacob Linder, and Igor Žutić "Interfacial spin-orbit coupling: A platform for superconducting spintronics", Proc. SPIE 11470, Spintronics XIII, 1147004 (20 August 2020); https://doi.org/10.1117/12.2569161
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KEYWORDS
Superconductors
Spintronics
System on a chip
Anisotropy
Magnetism
Ferromagnetics
Metals
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