Please use this identifier to cite or link to this item:
http://doi.org/10.25358/openscience-5586
Authors: | Lebrun, Romain Ross, Andrew Gomonay, Olena Baltz, V. Ebels, U. Barra, A.-L. Qaiumzadeh, Alireza Brataas, Arne Sinova, Jairo Kläui, Mathias |
Title: | Long-distance spin-transport across the Morin phase transition up to room temperature in ultra-low damping single crystals of the antiferromagnet alpha-Fe2O3 |
Online publication date: | 11-Feb-2021 |
Year of first publication: | 2020 |
Language: | english |
Abstract: | Antiferromagnetic materials can host spin-waves with polarizations ranging from circular to linear depending on their magnetic anisotropies. Until now, only easy-axis anisotropy antiferromagnets with circularly polarized spin-waves were reported to carry spin-information over long distances of micrometers. In this article, we report long-distance spin-transport in the easy-plane canted antiferromagnetic phase of hematite and at room temperature, where the linearly polarized magnons are not intuitively expected to carry spin. We demonstrate that the spin-transport signal decreases continuously through the easy-axis to easy-plane Morin transition, and persists in the easy-plane phase through current induced pairs of linearly polarized magnons with dephasing lengths in the micrometer range. We explain the long transport distance as a result of the low magnetic damping, which we measure to be <= 10(-5) as in the best ferromagnets. All of this together demonstrates that long-distance transport can be achieved across a range of anisotropies and temperatures, up to room temperature, highlighting the promising potential of this insulating antiferromagnet for magnon-based devices. Hitherto, only circularly polarized antiferromagnetic (AFM) spin-waves (SWs) were expected to convey spin-information. Here, the authors present persistent spin-transport over long distances in the easy-plane AFM phase of hematite, alpha -Fe2O3, via linearly polarized SW pairs with ultra-low damping. |
DDC: | 530 Physik 530 Physics |
Institution: | Johannes Gutenberg-Universität Mainz |
Department: | FB 08 Physik, Mathematik u. Informatik |
Place: | Mainz |
ROR: | https://ror.org/023b0x485 |
DOI: | http://doi.org/10.25358/openscience-5586 |
Version: | Published version |
Publication type: | Zeitschriftenaufsatz |
Document type specification: | Scientific article |
License: | CC BY |
Information on rights of use: | https://creativecommons.org/licenses/by/4.0/ |
Journal: | Nature Communications 11 |
Pages or article number: | 6332 |
Publisher: | Nature Publishing Group UK |
Publisher place: | London |
Issue date: | 2020 |
ISSN: | 2041-1723 |
Publisher URL: | https://doi.org/10.1038/s41467-020-20155-7 |
Publisher DOI: | 10.1038/s41467-020-20155-7 |
Appears in collections: | JGU-Publikationen |
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