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Title: Real-space observation of magnetic excitations and avalanche behavior in artificial quasicrystal lattices

Abstract

Artificial spin ice lattices have emerged as model systems for studying magnetic frustration in recent years. Most work to date has looked at periodic artificial spin ice lattices. In this paper, we observe frustration effects in quasicrystal artificial spin ice lattices that lack translational symmetry and contain vertices with different numbers of interacting elements. We find that as the lattice state changes following demagnetizing and annealing, specific vertex motifs retain low-energy configurations, which excites other motifs into higher energy configurations. In addition, we find that unlike the magnetization reversal process for periodic artificial spin ice lattices, which occurs through 1D avalanches, quasicrystal lattices undergo reversal through a dendritic 2D avalanche mechanism.

Authors:
 [1];  [1];  [2];  [1]
  1. Argonne National Lab. (ANL), Lemont, IL (United States); Northwestern Univ., Evanston, IL (United States)
  2. Argonne National Lab. (ANL), Lemont, IL (United States)
Publication Date:
Research Org.:
Argonne National Lab. (ANL), Argonne, IL (United States)
Sponsoring Org.:
USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22). Materials Sciences and Engineering Division
OSTI Identifier:
1335879
Grant/Contract Number:  
AC02-06CH11357
Resource Type:
Accepted Manuscript
Journal Name:
Scientific Reports
Additional Journal Information:
Journal Volume: 6; Journal ID: ISSN 2045-2322
Publisher:
Nature Publishing Group
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; artificial spin ice; frustrated magnetism; quasicrystals

Citation Formats

Brajuskovic, V., Barrows, F., Phatak, C., and Petford-Long, A. K. Real-space observation of magnetic excitations and avalanche behavior in artificial quasicrystal lattices. United States: N. p., 2016. Web. doi:10.1038/srep34384.
Brajuskovic, V., Barrows, F., Phatak, C., & Petford-Long, A. K. Real-space observation of magnetic excitations and avalanche behavior in artificial quasicrystal lattices. United States. doi:10.1038/srep34384.
Brajuskovic, V., Barrows, F., Phatak, C., and Petford-Long, A. K. Mon . "Real-space observation of magnetic excitations and avalanche behavior in artificial quasicrystal lattices". United States. doi:10.1038/srep34384. https://www.osti.gov/servlets/purl/1335879.
@article{osti_1335879,
title = {Real-space observation of magnetic excitations and avalanche behavior in artificial quasicrystal lattices},
author = {Brajuskovic, V. and Barrows, F. and Phatak, C. and Petford-Long, A. K.},
abstractNote = {Artificial spin ice lattices have emerged as model systems for studying magnetic frustration in recent years. Most work to date has looked at periodic artificial spin ice lattices. In this paper, we observe frustration effects in quasicrystal artificial spin ice lattices that lack translational symmetry and contain vertices with different numbers of interacting elements. We find that as the lattice state changes following demagnetizing and annealing, specific vertex motifs retain low-energy configurations, which excites other motifs into higher energy configurations. In addition, we find that unlike the magnetization reversal process for periodic artificial spin ice lattices, which occurs through 1D avalanches, quasicrystal lattices undergo reversal through a dendritic 2D avalanche mechanism.},
doi = {10.1038/srep34384},
journal = {Scientific Reports},
number = ,
volume = 6,
place = {United States},
year = {2016},
month = {10}
}

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    Works referencing / citing this record:

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    • Zhang, S.; Petford-Long, A. K.; Heinonen, O.
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    • Nature Physics, Vol. 7, Issue 1
    • DOI: 10.1038/nphys1853

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    • Nature, Vol. 451, Issue 7174
    • DOI: 10.1038/nature06433

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    • Mengotti, Elena; Heyderman, Laura J.; Rodríguez, Arantxa Fraile
    • Nature Physics, Vol. 7, Issue 1
    • DOI: 10.1038/nphys1794

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    • Goldman, Alan I.; Kong, Tai; Kreyssig, Andreas
    • Nature Materials, Vol. 12, Issue 8
    • DOI: 10.1038/nmat3672

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