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Manipulation and trapping of magnetic skyrmions with domain walls in chiral magnetic thin films
KTH, School of Engineering Sciences (SCI), Physics, Condensed Matter Theory.ORCID iD: 0000-0002-6012-0034
2025 (English)In: Journal of Physics: Condensed Matter, ISSN 0953-8984, E-ISSN 1361-648X, Vol. 37, no 13, article id 135804Article in journal (Refereed) Published
Abstract [en]

In this article we use chiral domain walls to manipulate and trap magnetic skyrmion quasi-particles in chiral magnetic materials such as ultrathin Co/Pt films. The magnetic skyrmions can be orientated such that their interaction with domain walls is repulsive, allowing for them to be stored between domain walls. In certain orientations, the skyrmion can be absorbed into the domain wall, forming a domain wall kink. In other orientations, it can absorbed to form a kink-antikink domain wall with zero topological charge. The magnetic skyrmion can even be orientated in such a way that it remains trapped but creates a topological defect-antidefect pair in one of the walls. By altering the phases of one of the chiral domain walls, one can erase or store the magnetic skyrmion as an isolated soliton or as a domain wall skyrmion/antiskyrmion. This adds a valuable asset to an ever growing toolbox of spintronic nano-devices.

Place, publisher, year, edition, pages
IOP Publishing , 2025. Vol. 37, no 13, article id 135804
Keywords [en]
domain wall, chiral magnet, magnetic skyrmion
National Category
Condensed Matter Physics
Identifiers
URN: urn:nbn:se:kth:diva-360379DOI: 10.1088/1361-648X/adb230ISI: 001420444900001PubMedID: 39904027Scopus ID: 2-s2.0-85217896511OAI: oai:DiVA.org:kth-360379DiVA, id: diva2:1940508
Note

QC 20250303

Available from: 2025-02-26 Created: 2025-02-26 Last updated: 2025-03-03Bibliographically approved

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Leask, Paul

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