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Theoretical Study of Current-Induced Dynamics of an Antiferromagnetic Skyrmionium

dc.contributor.authorAbayomi, Samuel Obadero
dc.date.accessioned2020-01-08T14:08:13Z
dc.date.available2020-01-08T14:08:13Z
dc.date.issued2019-06-22
dc.identifier.urihttp://repository.aust.edu.ng/xmlui/handle/123456789/4935
dc.description.abstractIn this thesis, we present a theoretical study on the current-induced nucleation and propagation of antiferromagnetic skyrmionium. A skyrmionium, also known as 2π-skyrmion, is a vortex-like magnetic structure characterized by zero topological charge. We show by means of micro-magnetic simulation that an antiferromagnetic skyrmionium can be nucleated via a local injection of spin current with toroidal distribution. Our systematic study of the current-induced dynamics shows that a spatially uniform spin current induces propagation of antiferromagnetic skyrmionium with measurable distortion at high current densities. We derive expression for the velocity of the antiferromagnetic skyrmionium based on the collective-coordinate model and obtain good agreement with our numerical results.en_US
dc.description.sponsorshipAfDB and AUST.en_US
dc.language.isoenen_US
dc.subjectAbayomi Samuel Obaderoen_US
dc.subjectDr. Collins Akosaen_US
dc.subject2019 Theoretical and Applied Physics Thesesen_US
dc.titleTheoretical Study of Current-Induced Dynamics of an Antiferromagnetic Skyrmioniumen_US
dc.typeThesisen_US


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  • Theoretical and Applied Physics55

    This collection contains selected research work by Theoretical and Applied Physics Students at the master's level, from 2009-2022.

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