Anisotropic long-range spin transport in canted antiferromagnetic orthoferrite YFeO3
Das, Shubhankar; Ross, A; Ma, X.X.; Becker, S.; Schmitt, C.; van Duijn, Duijn; Galindez-Ruales, E.F.; Fuhrmann, F.; Syskaki, M.-A.; Ebels, U.; Baltz, V.; Barra, A.-L.; Chen, H.Y.; Jakob, G.; Cao, S.X.; Sinova, J.; Gomonay, O.; Lebrun, R.; Klaui, Mathias Michael
Peer reviewed, Journal article
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Date
2022Metadata
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- Institutt for fysikk [2680]
- Publikasjoner fra CRIStin - NTNU [37737]
Abstract
In antiferromagnets, the efficient transport of spin-waves has until now only been observed in the insulating antiferromagnet hematite, where circularly (or a superposition of pairs of linearly) polarized spin-waves diffuse over long distances. Here, we report long-distance spin-transport in the antiferromagnetic orthoferrite YFeO3, where a different transport mechanism is enabled by the combined presence of the Dzyaloshinskii-Moriya interaction and externally applied fields. The magnon decay length is shown to exceed hundreds of nanometers, in line with resonance measurements that highlight the low magnetic damping. We observe a strong anisotropy in the magnon decay lengths that we can attribute to the role of the magnon group velocity in the transport of spin-waves in antiferromagnets. This unique mode of transport identified in YFeO3 opens up the possibility of a large and technologically relevant class of materials, i.e., canted antiferromagnets, for long-distance spin transport.