Please use this identifier to cite or link to this item: https://scholarbank.nus.edu.sg/handle/10635/208982
Title: NANOSCALE IMAGING & ELECTRICAL MANIPULATION OF MAGNETIC SKYRMIONS
Authors: SIM MAY INN
ORCID iD:   orcid.org/0000-0002-9700-781X
Keywords: Spintronics, Magnetism, Skyrmion, Thin films, Magnetic force microscopy, Device physics
Issue Date: 30-Jul-2021
Citation: SIM MAY INN (2021-07-30). NANOSCALE IMAGING & ELECTRICAL MANIPULATION OF MAGNETIC SKYRMIONS. ScholarBank@NUS Repository.
Abstract: Magnetic skyrmions are topologically protected spin structures stabilized by interfacial chiral interactions in thin film multilayers. Their ease of current-driven motion within “racetrack” (wire) geometry is particularly promising for applications in memory and computing. Our two-part work here, first, enables the greater understanding of skyrmion dynamics in multilayer Pt/Co/MgO wire devices imaged using magnetic force microscopy. We analyse the motion of dense skyrmion configurations under in situ magnetic fields to investigate the interplay of dynamics and skyrmion interactions. Next, we examine synthetic antiferromagnets (SAFs) as skyrmion hosts. SAF skyrmions are expected to exhibit inhibited skyrmion Hall effect (SkHE), which is a key impediment for skyrmion dynamics. This work enables us to establish a composite Ir/Fe/Co/Pt multilayer platform that hosts stable SAF skyrmions at zero magnetic field. These investigations into skyrmion dynamics, skyrmion interactions, and SkHE-free SAF skyrmions pave a path towards the incorporation of skyrmions into potential skyrmionics device applications.
URI: https://scholarbank.nus.edu.sg/handle/10635/208982
Appears in Collections:Master's Theses (Restricted)

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