Die DPG-Frühjahrstagung in Dresden musste abgesagt werden! Lesen Sie mehr ...

Bereiche | Tage | Auswahl | Suche | Aktualisierungen | Downloads | Hilfe

MA: Fachverband Magnetismus

MA 15: Computational Magnetism II

MA 15.5: Vortrag

Montag, 16. März 2020, 16:00–16:15, HSZ 403

Meron/antimeron magnetic majority gates. — •Nikolaos Ntallis¹, Anders Bergman¹, Danny Thonig³, Erik Sjöqvist¹, Anna Delin², Olle Eriksson^{1, 3}, and Manuel Pereiro¹ — ¹Department of Physics and Astronomy, Uppsala University, Uppsala 751 20, Sweden — ²Department of Applied Physics, School of Engineering Sciences, KTH Royal Institute of Technology, Electrum 229, SE-16440 Kista, Sweden — ³Orebro University, SE-701 82, Orebro, Sweden

The development of electronic devices is undergoing the bottleneck of the performance and power consuming with continuous miniaturization. Spin based logic devices, which use the spin degree of freedom, have attracted a lot of research interest due to their potential in low-power operation, non-volatility and possibility to enable new computing applications. In this work, we present a model for a magnetic majority gate in which bits are assigned to merons/antimerons. We employ atomistic spin dynamics simulations via the UppASD package on nanostructures with symmetry of a kagome lattice. The merons can propagate along the edge of the material with negligible energy dissipation due to the presence of chiral edge modes. We demonstrate how different input modes can result into a single topological excitation in the output signal.

Funding Acknowledgment: This research is part of the project "Dynamic Phenomena of Magnetic Materials" funded by the Knut and Alice Wallenberg Foundation.