Curvilinear one-dimensional antiferromagnets
| Autor: | Denis D. Sheka, Ulrich K. Rößler, Artem V. Tomilo, Denys Makarov, Kostiantyn V. Yershov, Jürgen Fassbender, Denys Y Kononenko, Jeroen van den Brink, Oleksandr V. Pylypovskyi |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2020 |
| Předmět: |
spin-orbitronics
FOS: Physical sciences Bioengineering Position and momentum space 02 engineering and technology curvilinear spin chain Curvature Spin wave Mesoscale and Nanoscale Physics (cond-mat.mes-hall) Antiferromagnetism General Materials Science Dzyaloshinskii-Moriya interaction Physics Curvilinear coordinates Spintronics Condensed matter physics Condensed Matter - Mesoscale and Nanoscale Physics Mechanical Engineering Magnon General Chemistry 021001 nanoscience & nanotechnology Condensed Matter Physics antiferromagnetism Quasiparticle Condensed Matter::Strongly Correlated Electrons 0210 nano-technology |
| Zdroj: | Nano Letters 20(2020)11, 8157-8162 arXiv:2005.05835 [cond-mat.mes-hall]: https://arxiv.org/abs/2005.05835 |
| 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: | OpenAIRE |
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