SKM 2023 – wissenschaftliches Programm

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MA: Fachverband Magnetismus

MA 23: Poster Magnetism I

MA 23.50: Poster

Dienstag, 28. März 2023, 17:00–19:00, P1

Magnon transport in magnetically ordered insulator/platinum nanostructures — •Maria Sigl^1,2, Janine Gückelhorn^1,2, Monika Scheufele^1,2, Franz Weidenhiller^1,2, Matthias Opel¹, Stephan Geprägs¹, Hans Huebl^1,2,3, Matthias Althammer^1,2, and Rudolf Gross^1,2,3 — ¹Walther-Meißner-Institut, Bayerische Akademie der Wissenschaften, Garching, Germany — ²Technical University of Munich, TUM School of Natural Sciences, Physics Department, Garching, Germany — ³Munich Center for Quantum Science and Technology, München, Germany

For energy-efficient information processing, the transport and manipulation of spin waves (magnons) in magnetically ordered insulators (MOIs) offers a promising route. To this end, we investigate the magnon transport in MOI/Pt bilayers by all-electrical means utilizing the spin Hall effect. Here, we focus on the transport in the ferrimagnet yttrium iron garnet (Y₃Fe₅O₁₂, YIG) and the antiferromagnet hematite (α-Fe₂O₃) using two- and three-terminal devices. Two electrically isolated Pt strips on top of the MOI, act as spin current injector and detector. An applied charge current to a third strip, the modulator, in between injector and detector allows for electrical control of the diffusive magnon spin transport. We systematically study the distance and magnetic field dependence of the magnon transport in YIG and hematite and compare our results to simultaneous spin Hall magnetoresistance measurements.