Interaction of isolated skyrmions with point and linear defects

Carles Navau, Nuria Del-Valle, Alvaro Sanchez

Research output: Contribution to journalArticleResearch

4 Citations (Scopus)

Abstract

© 2018 Elsevier B.V. The dynamic behavior of individual skyrmions is highly affected by the defects in the materials that host them. Here we develop a theory to account for the effect that defects produce over the skyrmion dynamics. The skyrmion-defect interaction mechanism is explained at an atomic level as a local modification of exchange, Dzyaloshinskii-Moriya (DM) and/or anisotropy interaction. Relevant micromagnetic magnitudes as the energy density and effective magnetic fields arising from the presence of the defect are derived. We also find analytical expressions for the forces exerted by this defect over a skyrmion within Thiele's rigid approximation. Both point-defects as well as linear defects are considered.
Original languageEnglish
Pages (from-to)709-715
JournalJournal of Magnetism and Magnetic Materials
Volume465
DOIs
Publication statusPublished - 1 Nov 2018

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