Shi, D orcid.org/0000-0001-7165-9716, Budrikis, Z, Stein, A orcid.org/0000-0003-4424-5416 et al. (4 more authors) (2018) Frustration and thermalization in an artificial magnetic quasicrystal. Nature Physics, 14 (3). pp. 309-314. ISSN 1745-2473
Abstract
Artificial frustrated systems offer a playground to study the emergent properties of interacting systems. Most work to date has been on spatially periodic systems, known as artificial spin ices when the interacting elements are magnetic. Here we have studied artificial magnetic quasicrystals based on quasiperiodic Penrose tiling patterns of interacting nanomagnets. We construct a low-energy configuration from a step-by-step approach that we propose as a ground state. Topologically induced emergent frustration means that this configuration cannot be constructed from vertices in their ground states. It has two parts, a quasi-one-dimensional ‘skeleton’ that spans the entire pattern and is capable of long-range order, surrounding ‘flippable’ clusters of macrospins that lead to macroscopic degeneracy. Magnetic force microscopy imaging of Penrose tiling arrays revealed superdomains that are larger for more strongly coupled arrays, especially after annealing the array above its blocking temperature.
Metadata
Item Type: | Article |
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Authors/Creators: |
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Copyright, Publisher and Additional Information: | © 2018 Macmillan Publishers Limited, part of Springer Nature. This is an author produced version of a paper published in Nature Physics. Uploaded in accordance with the publisher's self-archiving policy. |
Keywords: | Magnetic properties and materials; Nanoscale materials; Statistical physics |
Dates: |
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Institution: | The University of Leeds |
Academic Units: | The University of Leeds > Faculty of Engineering & Physical Sciences (Leeds) > School of Physics and Astronomy (Leeds) > Condensed Matter (Leeds) |
Depositing User: | Symplectic Publications |
Date Deposited: | 08 Jun 2018 14:33 |
Last Modified: | 16 Dec 2024 09:48 |
Status: | Published |
Publisher: | Springer Nature |
Identification Number: | 10.1038/s41567-017-0009-4 |
Related URLs: | |
Open Archives Initiative ID (OAI ID): | oai:eprints.whiterose.ac.uk:113952 |