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Description
Title: | Magnetotransport of connected artificial spin ice |
Author(s): | Le, Brian Lamson |
Director of Research: | Schiffer, Peter E. |
Doctoral Committee Chair(s): | Mason, Nadya |
Doctoral Committee Member(s): | DeMarco, Brian L.; Vishveshwara, Smitha |
Department / Program: | Physics |
Discipline: | Physics |
Degree Granting Institution: | University of Illinois at Urbana-Champaign |
Degree: | Ph.D. |
Genre: | Dissertation |
Subject(s): | artificial spin ice
frustrated magnetism magnetotransport exchange bias anisotropic magnetoresistance planar Hall effect |
Abstract: | Artificial spin ices are mesoscopic arrays of interacting single-domain ferromagnetic nanoislands or nanowires. With Ising-like behavior of individual magnetic moments, artificial spin ice has been utilized to investigate geometrically frustrated systems like spin ice, a class of magnetic pyrochlore oxides. Here I detail measurements of the magnetotransport response of connected artificial spin ice to varying temperatures and magnetic fields. In the literature, transport measurements have been used simply as a tool to probe the behavior of connected artificial spin ice. Here I demonstrate that connected artificial spin ice possesses fascinating intrinsic magnetotransport properties. I describe first the interplay between artificial spin ice transport and another magnetic phenomenon, exchange bias. Afterwards, I detail systematic transport measurements for different magnetic field directions, revealing that the vertices of connected artificial spin ice control facets of the transport features. |
Issue Date: | 2016-04-11 |
Type: | Text |
URI: | http://hdl.handle.net/2142/90524 |
Rights Information: | Copyright 2016 by Brian L. Le |
Date Available in IDEALS: | 2016-07-07 |
Date Deposited: | 2016-05 |
This item appears in the following Collection(s)
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Graduate Dissertations and Theses at Illinois
Graduate Theses and Dissertations at Illinois