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Skyrmions, Antiskyrmions and Bobbers: Novel particles in chiral magnets
Peter Grünberg Institut and Institute for Advanced Simulation, Forschungszentrum Jülich and JARA, Jülich, 52425, Germany.
Peter Grünberg Institut and Institute for Advanced Simulation, Forschungszentrum Jülich and JARA, Jülich, 52425, Germany.
Peter Grünberg Institut and Institute for Advanced Simulation, Forschungszentrum Jülich and JARA, Jülich, 52425, Germany; Science Institute of the University of Iceland, VR-III, 107, Reykjavík, Iceland, VR-III.
Department of Mathematics I and JARA FIT, RWTH Aachen University, Aachen, 52056, Germany.
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2019 (English)In: The 10th International Conference on Metamaterials, Photonic Crystals and Plasmonics, META 2019, META Conference , 2019, p. 677-678Conference paper, Published paper (Refereed)
Abstract [en]

Chiral magnets are an emerging class of topological matter harbouring localized and topologically protected vortexlike magnetic textures called skyrmions, which are currently under intense scrutiny as a new entity for information storage and processing. Chirality in magnetism is introduced through the chiral symmetry breaking Dzyaloshinskii-Moriya interaction, which arizes through the spin-orbit interaction in magnets with structural bulk and interface inversion asymmetry. We have shown that chiral magnets cannot only host skyrmions but also antiskyrmions and chiral bobbers as localized magnetization particles. We present a multiscale approach relating the electronic structure to an atomistic spin-lattice model and further to micromagnetic models by means of densityfunctional calculations, derive practical criteria for their occurrence and coexistence with skyrmions and minimizing the energy on a mesoscopic scale applying varying spinrelaxation methods. We conjecture on possible materials for antiskyrmions and give experimental evidence for bobbers. The technology potential of having two distinctly different stable particles will be discussed.

Place, publisher, year, edition, pages
META Conference , 2019. p. 677-678
National Category
Electrical Engineering, Electronic Engineering, Information Engineering
Identifiers
URN: urn:nbn:se:kth:diva-350364Scopus ID: 2-s2.0-85172465703OAI: oai:DiVA.org:kth-350364DiVA, id: diva2:1884184
Conference
10th International Conference on Metamaterials, Photonic Crystals and Plasmonics, META 2019, Lisbon, Portugal, Jul 23 2019 - Jul 26 2019
Note

QC 20240715

Available from: 2024-07-15 Created: 2024-07-15 Last updated: 2024-07-15Bibliographically approved

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Rybakov, Filipp N

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