Anisotropic long-range spin transport in canted antiferromagnetic orthoferrite YFeO3
- 1. Institute of Physics, Johannes Gutenberg University Mainz, Staudingerweg 7, 55128, Mainz, Germany
- 2. Unité Mixte de Physique CNRS, Thales, Université Paris-Saclay, Palaiseau, 91767, France
- 3. Department of Physics, Materials Genome Institute, International Center for Quantum and Molecular Structures, Shanghai University, Shanghai, 200444, China
- 4. Univ. Grenoble Alpes, CNRS, CEA, Grenoble INP, SPINTEC, F-38000, Grenoble, France
- 5. Laboratoire National des Champs Magnétiques Intenses, CNRS-UGA-UPS-INSA-EMFL, F-38042, Grenoble, France
- 6. Institute of Physics, Johannes Gutenberg University Mainz, Staudingerweg 7, 55128, Mainz, Germany and Graduate School of Excellence Materials Science in Mainz, Staudingerweg 9, 55128, Mainz, Germany
- 7. Institute of Physics, Johannes Gutenberg University Mainz, Staudingerweg 7, 55128, Mainz, Germany and Graduate School of Excellence Materials Science in Mainz, Staudingerweg 9, 55128, Mainz, Germany and Center for Quantum Spintronics, Norwegian University of Science and Technology, Trondheim, 7491, Norway
Description
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.
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Nature Communications 13.pdf
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