University of Illinois Urbana-Champaign

Magnetotransport of connected artificial spin ice

Le, Brian Lamson

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Appendix B - 20141031_armchair_L_E2 Field Sweeps.rar
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LE-DISSERTATION-2016.pdf

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https://hdl.handle.net/2142/90524

Description

Title
Magnetotransport of connected artificial spin ice
Author(s)
Le, Brian Lamson
Issue Date
2016-04-11
Director of Research (if dissertation) or Advisor (if thesis)
Schiffer, Peter E.
Doctoral Committee Chair(s)
Mason, Nadya
Committee Member(s)
  • DeMarco, Brian L.
  • Vishveshwara, Smitha
Department of Study
Physics
Discipline
Physics
Degree Granting Institution
University of Illinois at Urbana-Champaign
Degree Name
Ph.D.
Degree Level
Dissertation
Date of Ingest
2016-07-07T19:53:39Z
Keyword(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.
Graduation Semester
2016-05
Type of Resource
text
Permalink
http://hdl.handle.net/2142/90524
Copyright and License Information
Copyright 2016 by Brian L. Le

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