Curvilinear one-dimensional antiferromagnets
| Autor: | Pylypovskyi, Oleksandr V., Kononenko, Denys Y., Yershov, Kostiantyn V., Rößler, Ulrich K., Tomilo, Artem V., Faßbender, Jürgen, Brink, Jeroen van den, Makarov, Denys, Sheka, Denis D. |
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| Rok vydání: | 2020 |
| Předmět: | |
| Zdroj: | Nano Letters, 2020 |
| Druh dokumentu: | Working Paper |
| DOI: | 10.1021/acs.nanolett.0c03246 |
| Popis: | Antiferromagnets host exotic quasiparticles, support high frequency excitations and are key enablers of the prospective spintronic and spin-orbitronic technologies. Here, we propose a concept of a curvilinear antiferromagnetism where material responses can be tailored by a geometrical curvature without the need to adjust material parameters. We show that an intrinsically achiral one-dimensional (1D) curvilinear antiferromagnet behaves as a chiral helimagnet with geometrically tunable Dzyaloshinskii--Moriya interaction (DMI) and orientation of the N\'{e}el vector. The curvature-induced DMI results in the hybridization of spin wave modes and enables a geometrically-driven local minimum of the low frequency branch. This positions curvilinear 1D antiferromagnets as a novel platform for the realization of geometrically tunable chiral antiferromagnets for antiferromagnetic spin-orbitronics and fundamental discoveries in the formation of coherent magnon condensates in the momentum space. Comment: 6 pages, 2 figures |
| Databáze: | arXiv |
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