Implementing magnon-photon interaction using analytical and numerical techniques

Simple item page
dc.contributor.authorIyaro, Oluwanisola Jephthah
dc.contributor.examiningcommitteeHu, Can-Ming (Physics and Astronomy)
dc.contributor.examiningcommitteeBurgess, Jacob (Physics and Astronomy)
dc.contributor.supervisorStamps, Robert
dc.date.accessioned2023-12-14T16:27:44Z
dc.date.available2023-12-14T16:27:44Z
dc.date.issued2023-12-12
dc.date.submitted2023-12-12T19:23:48Zen_US
dc.degree.disciplinePhysics and Astronomyen_US
dc.degree.levelMaster of Science (M.Sc.)
dc.description.abstractThe interaction between magnons and photons has significant implications for quantum information processing and in spintronics. In an electromagnetic cavity, wherein photons are confined, the photon-magnon coupling can be enhanced and controlled more effectively. In this thesis, we investigate a model system wherein the interaction between an antiferromagnetic domain wall and cavity photons occurs via the inverse Faraday effect, resulting in a coupling analogous to optomechanical coupling. The coupled dynamics leads to the emergence of level attraction, a term used to describe the coalescence of two distinct eigenmodes in a region bounded by exceptional points. We reveal the impact of the Dzyaloshinskii-Moriya Interaction (DMI) on the coupled dynamics of domain walls to cavity photons. We demonstrate that the presence of DMI can affect the coupling between magnons and photons, depending on the geometry of the system. This finding has potential applications in the control and detection of DMI in antiferromagnetic materials. Using a different formalism, we provide a demonstration that the phenomenon of level attraction can arise in systems characterized by instability under non-equilibrium conditions. A formalism for characterizing the linear response of driven magnonic systems has been developed and we show that results can be reproduced using numerical micromagnetics. The developed theory facilitates the study of cavity magnonics using numerical micromagnetics.
dc.description.noteFebruary 2024
dc.identifier.urihttp://hdl.handle.net/1993/37869
dc.language.isoeng
dc.rightsopen accessen_US
dc.subjectmagnonics
dc.subjectcavity
dc.titleImplementing magnon-photon interaction using analytical and numerical techniques
dc.typemaster thesisen_US
local.subject.manitobano
project.funder.identifierhttps://doi.org/10.13039/501100000038
project.funder.nameNatural Sciences and Engineering Research Council of Canada
Files
Original bundle
Now showing 1 - 1 of 1
Thumbnail Image
Name:
Iyaro_Oluwanisola.pdf
Size:
787.36 KB
Format:
Adobe Portable Document Format
Description:
This thesis contains two published articles by the American Physical Society. See the following citations of these publications: [1] Jephthah O. Iyaro, Igor Proskurin, and Robert L. Stamps. Collective dynamics of domain walls: An antiferromagnetic spin texture in an optical cavity. Phys. Rev. B, 104:184416, Nov 2021. DOI: https://doi-org.uml.idm.oclc.org/10.1103/PhysRevB.104.184416 [2] Igor Proskurin, Jephthah O. Iyaro, and Robert L. Stamps. Mode attraction in floquet systems with memory: Application to magnonics. Phys. Rev. B, 105:224420, Jun 2022. DOI: https://doi-org.uml.idm.oclc.org/10.1103/PhysRevB.105.224420
Download
License bundle
Now showing 1 - 1 of 1
Thumbnail Image
Name:
license.txt
Size:
770 B
Format:
Item-specific license agreed to upon submission
Description:
Download
Collections
FGS - Electronic Theses and Practica