dc.contributor.author | Wilson, Murray | |
dc.date.accessioned | 2013-04-08T12:40:53Z | |
dc.date.available | 2013-04-08T12:40:53Z | |
dc.date.issued | 2013-04-08 | |
dc.identifier.uri | http://hdl.handle.net/10222/21672 | |
dc.description.abstract | Detailed magnetometry and polarized neutron reflectometry studies were conducted
on MnSi thin films grown epitaxially on Si(111) substrates. It is demonstrated that
with an in-plane applied field H || [110], a broadly stable skyrmion phase exists at
elevated temperatures and fields.
Magnetometry and transport measurements with an out-of-plane applied field
H || [111] prove that no skyrmion phase exists in this geometry. However, Hall effect
measurements in this geometry show unexpected evidence of a topological Hall effect.
This can be explained with a multi-dimensionally modulated cone phase, which proves
that contrary to recent literature, a topological Hall effect is not sufficient proof of
skyrmions.
The results of this thesis represent a significant step towards a technologically
relevant material in which skyrmions are broadly stable. A material of this type
could be used in novel magnetic storage devices and signi ficantly impact our future
computing capabilities. | en_US |
dc.language.iso | en | en_US |
dc.subject | Skyrmion | en_US |
dc.subject | Magnetic thin film | en_US |
dc.subject | Dzyaloshinskii-Moriya | en_US |
dc.subject | Spintronics | en_US |
dc.subject | Helimagnet | en_US |
dc.subject | Hall Effect | en_US |
dc.title | Magnetic Skyrmion Phase in MnSi Thin Films | en_US |
dc.date.defence | 2013-04-01 | |
dc.contributor.department | Department of Physics & Atmospheric Science | en_US |
dc.contributor.degree | Master of Science | en_US |
dc.contributor.external-examiner | n/a | en_US |
dc.contributor.graduate-coordinator | Dr. Kevin Hewitt | en_US |
dc.contributor.thesis-reader | Dr. Richard Dunlap | en_US |
dc.contributor.thesis-reader | Dr. Kevin Hewitt | en_US |
dc.contributor.thesis-supervisor | Dr. Theodore Monchesky | en_US |
dc.contributor.ethics-approval | Not Applicable | en_US |
dc.contributor.manuscripts | Not Applicable | en_US |
dc.contributor.copyright-release | Not Applicable | en_US |