Materials Science & Engineering Research Works

Permanent URI for this collectionhttp://hdl.handle.net/1903/1660

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Author: search.filters.author.Cumings, John

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    Nanoscale Mixed Ion-Electron Conducting NASICON-type Thin-Films: Lithium Titanium Phosphate via Atomic Layer Deposition
    (American Chemical Society, 2025) Fontecha, Daniela; Kozen, Alexander; Stewart, David M.; Hall, Alex T.; Cumings, John; Rubloff, Gary W.; Gregorczyk, Keith E.; Rubloff, Gary W.
    The attached data encompasses the raw data files and processed XPS data for the article “Nanoscale Mixed Ion-Electron Conducting NASICON-type Thin-Films: Lithium Titanium Phosphate via Atomic Layer Deposition
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    Dataset for "Resistance of Boron Nitride Nanotubes to Radiation-Induced Oxidation" as published in The Journal of Physical Chemistry C
    (2024) Chao, Hsin-Yun (Joy); Nolan, Adelaide M.; Hall, Alex T.; Golberg, Dmitri; Park, Cheol; Yang, Wei-Chang David; Mo, Yifei; Sharma, Renu; Cumings, John
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    Topological frustration of artificial spin ice
    (Nature Publishing Group, 2017-01-13) Drisko, Jasper; Marsh, Thomas; Cumings, John
    Frustrated systems, typically characterized by competing interactions that cannot all be simultaneously satisfied, display rich behaviours not found elsewhere in nature. Artificial spin ice takes a materials-by-design approach to studying frustration, where lithographically patterned bar magnets mimic the frustrated interactions in real materials but are also amenable to direct characterization. Here, we introduce controlled topological defects into square artificial spin ice lattices in the form of lattice edge dislocations and directly observe the resulting spin configurations. We find the presence of a topological defect produces extended frustration within the system caused by a domain wall with indeterminate configuration. Away from the dislocation, the magnets are locally unfrustrated, but frustration of the lattice persists due to its topology. Our results demonstrate the non-trivial nature of topological defects in a new context, with implications for many real systems in which a typical density of dislocations could fully frustrate a canonically unfrustrated system.
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    Topological frustration of artificial spin ice supplemental movies
    (2015) Cumings, John; Marsh, Thomas; Drisko, Jasper