Chiral logic computing with twisted antiferromagnetic magnon modes
Autor: | Alexander F. Schäffer, Jamal Berakdar, Min Chen, Chenglong Jia |
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Jazyk: | angličtina |
Rok vydání: | 2021 |
Předmět: |
02 engineering and technology
01 natural sciences law.invention symbols.namesake QA76.75-76.765 law Spin wave 0103 physical sciences Faraday effect General Materials Science Computer software 010306 general physics Materials of engineering and construction. Mechanics of materials Topology (chemistry) Coupling Physics Spintronics Condensed matter physics Magnon 021001 nanoscience & nanotechnology Computer Science Applications Mechanics of Materials Modeling and Simulation Logic gate symbols TA401-492 Condensed Matter::Strongly Correlated Electrons 0210 nano-technology Waveguide |
Zdroj: | npj Computational Materials, Vol 7, Iss 1, Pp 1-8 (2021) npj Computational Materials |
ISSN: | 2057-3960 |
Popis: | Antiferromagnetic (AFM) materials offer an exciting platform for ultrafast information handling with low cross-talks and compatibility with existing technology. Particularly interesting for low-energy cost computing is the spin wave-based realization of logic gates, which has been demonstrated experimentally for ferromagnetic waveguides. Here, we predict chiral magnonic eigenmodes with a finite intrinsic, magnonic orbital angular momentum ℓ in AFM waveguides. ℓ is an unbounded integer determined by the spatial topology of the mode. We show how these chiral modes can serve for multiplex AFM magnonic computing by demonstrating the operation of several symmetry- and topology-protected logic gates. A Dzyaloshinskii–Moriya interaction may arise at the waveguide boundaries, allowing coupling to external electric fields and resulting in a Faraday effect. The uncovered aspects highlight the potential of AFM spintronics for swift data communication and handling with high fidelity and at a low-energy cost. |
Databáze: | OpenAIRE |
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