Research Data Leeds Repository
Dataset associated with "Frustration and thermalisation in an arti cial magnetic quasicrystal"
Citation
Shi, Dong and Budrikis, Zoe and Stein, Aaron and Morley, Sophie A. and Olmsted, Peter D. and Burnell, Gavin (2017) Dataset associated with "Frustration and thermalisation in an arti cial magnetic quasicrystal". University of Leeds. [Dataset] https://doi.org/10.5518/176
Dataset description
We have created and studied artificial magnetic quasicrystals based on Penrose tiling patterns of interacting nanomagnets that lack the translational symmetry of spatially periodic artificial spin ices. Vertex-level degeneracy and frustration induced by the network topology of the Penrose pattern leads to a low energy configuration that we propose as a ground state. Topologically induced emergent frustration means that this ground state cannot be constructed from vertices in their ground states. It has two parts, a quasi-one-dimensional rigid "skeleton" that spans the entire pattern and is capable of long-range order, and "flippable" clusters of macrospins within it. These lead to macroscopic degeneracy for the array as a whole. Magnetic force microscopy imaging of Penrose tiling arrays revealed superdomains that are larger for more strongly coupled arrays. The superdomain size is larger after AC-demagnetisation and especially after annealing the array above its blocking temperature.
Subjects: | F000 - Physical sciences > F300 - Physics F000 - Physical sciences > F300 - Physics > F310 - Applied physics F000 - Physical sciences > F300 - Physics > F320 - Chemical physics > F321 - Solid-state physics |
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Divisions: | Faculty of Engineering and Physical Sciences > School of Physics and Astronomy | ||||||||
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License: | Creative Commons Attribution 4.0 International (CC BY 4.0) | ||||||||
Date deposited: | 04 Oct 2017 13:37 | ||||||||
URI: | https://archive.researchdata.leeds.ac.uk/id/eprint/267 | ||||||||