Focused ion beam modification of non-local magnon-based transport in yttrium iron garnet/platinum heterostructures

Schlitz R, Helm T, Lammel M, Nielsch K, Erbe A, Goennenwein STB (2019)

Publication Type: Journal article

Publication year: 2019

Journal

Applied Physics Letters American Institute of Physics (AIP)

Book Volume: 114

Article Number: 252401

Journal Issue: 25

DOI: 10.1063/1.5090209

Abstract

We study the impact of Ga ion exposure on the local and nonlocal magnetotransport response in heterostructures of the ferrimagnetic insulator yttrium iron garnet and platinum. In particular, we cut the yttrium iron garnet layer in between two electrically separated wires of platinum using a Ga ion beam and study the ensuing changes in the magnetoresistive response. We find that the nonlocal magnetoresistance signal vanishes when the yttrium iron garnet film between the Pt wires is fully cut, although the local spin Hall magnetoresistance signal remains finite. This observation corroborates the notion that pure spin currents carried by magnons are crucial for the nonlocal magnetotransport effects observed in magnetic insulator/metal nanostructures, while possible transport processes through the substrate can be ruled out.

Involved external institutions

Technische Universität Dresden DE Germany (DE) Max-Planck-Institut für Chemische Physik fester Stoffe (MPI CPfS) / Max Planck Institute for Chemical Physics of Solids DE Germany (DE) Leibniz-Institut für Festkörper- und Werkstoffforschung Dresden e.V. (IFW) / Leibniz Institute for Solid State and Materials Research Dresden DE Germany (DE) Helmholtz-Zentrum Dresden-Rossendorf (HZDR) DE Germany (DE)

How to cite

APA:

Schlitz, R., Helm, T., Lammel, M., Nielsch, K., Erbe, A., & Goennenwein, S.T.B. (2019). Focused ion beam modification of non-local magnon-based transport in yttrium iron garnet/platinum heterostructures. Applied Physics Letters, 114(25). https://doi.org/10.1063/1.5090209

MLA:

Schlitz, Richard, et al. "Focused ion beam modification of non-local magnon-based transport in yttrium iron garnet/platinum heterostructures." Applied Physics Letters 114.25 (2019).

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