Unveiling geometrically tunable spin superfluidity and nonlocal Spin hall magnetoresistance in lateral devices

Michael Kitcher; Geoffrey S. Beach

doi:10.1117/12.3025348

4 October 2024 Unveiling geometrically tunable spin superfluidity and nonlocal Spin hall magnetoresistance in lateral devices

Michael Kitcher, Geoffrey S. Beach

Author Affiliations +

Proceedings Volume PC13119, Spintronics XVII; PC131190F (2024) https://doi.org/10.1117/12.3025348
Event: Nanoscience + Engineering, 2024, San Diego, California, United States

Abstract

Spin superfluidity (SSF) is a non-diffusive transport mechanism analogous to superconductivity. However, the device geometries required for realizing SSF in conventional candidate materials are incompatible with current fabrication methods. In this work, we investigate the efficiency of SSF in the underexplored lateral device geometry. Starting from the Landau–Lifshitz–Gilbert equation we show that SSF efficiency is maximized whenever the area of the injector is much larger than that of the detector and transport channel. This unique tunability enables efficient, scale-independent spin transport. Furthermore, we connect the nonlocal resistivity to the unrecognized reciprocal of spin Hall magnetoresistance (SMR): spin pumping–induced SMR.

Conference Presentation

Citation Download Citation

Michael Kitcher and Geoffrey S. Beach "Unveiling geometrically tunable spin superfluidity and nonlocal Spin hall magnetoresistance in lateral devices", Proc. SPIE PC13119, Spintronics XVII, PC131190F (4 October 2024); https://doi.org/10.1117/12.3025348

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