Focused ion beam modification of non-local magnon-based transport in yttrium iron garnet/platinum heterostructures
arXiv:1901.08894 · doi:10.1063/1.5090209
Abstract
We study the impact of Ga ion exposure on the local and non-local 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 non-local 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 non-local magnetotransport effects observed in magnetic insulator/metal nanostructures.
arXiv comment5 pages, 3 figures
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Cited by in corpus (6)
- Inverse-design magnonic devices
- Control of nonlocal magnon spin transport via magnon drift currents
- From Chaotic Spin Dynamics to Non-collinear Spin Textures in YIG Nano-films by Spin Current Injection
- Electrically induced angular momentum flow between separated ferromagnets
- Non-local magnon-based transport in yttrium iron garnet/platinum heterostructures at high temperatures
- Statistical characterization of the spin Hall magnetoresistance in YIG/Pt heterostructures