Geometry and symmetry in skyrmion dynamicsShow others and affiliations
2021 (English)In: Physical Review B, ISSN 2469-9950, E-ISSN 2469-9969, Vol. 104, no 16, article id 165116Article in journal (Refereed) Published
Abstract [en]
The uniform motion of chiral magnetic skyrmions induced by a spin-transfer torque displays an intricate dependence on the skyrmions' topological charge and shape. We reveal surprising patterns in this dependence through simulations of the Landau-Lifshitz-Gilbert equation with Zhang-Li torque and explain them through a geometric analysis of Thiele's equation. Our results provide a universal geometrical understanding of the dependence of the skyrmion's velocity and Hall angle on the skyrmion's topological charge, shape, and orientation. The generality of our approach suggests the validity of our results for exchange-frustrated magnets, bubble materials, and other materials.
Place, publisher, year, edition, pages
American Physical Society (APS) , 2021. Vol. 104, no 16, article id 165116
National Category
Condensed Matter Physics
Identifiers
URN: urn:nbn:se:kth:diva-303964DOI: 10.1103/PhysRevB.104.165116ISI: 000705625900001Scopus ID: 2-s2.0-85117119752OAI: oai:DiVA.org:kth-303964DiVA, id: diva2:1605286
Note
QC 20211022
2021-10-222021-10-222022-06-25Bibliographically approved