Superferromagnetism and Domain-Wall Topologies in Artificial ‘Pinwheel’ Spin Ice

Yue Li*, Gary W. Paterson*, Gavin M. Macauley*, Fabio S. Nascimento+, Ciaran Ferguson*, Sophie A. Morley^†, Mark C. RosamondΔ, Edmund H. LinfieldΔ, Donald A. MacLaren*, Rair Mac\^edo*, Christopher H. MarrowsΔ, Stephen McVitie*, Robert L. Stamps*‡

* SUPA, School of Physics and Astronomy, University of Glasgow, Glasgow, G12 8QQ, United Kingdom
+ Departamento de F\'isica, Universidade Federal de Vi\c cosa, Vi\c cosa, 36570-900, Minas Gerais, Brazil
^ School of Physics and Astronomy, University of Leeds, Leeds, LS2 9JT, United Kingdom
† Department of Physics, University of California, Santa Cruz, California, 95064, USA
Δ School of Electronic and Electrical Engineering, University of Leeds, Leeds, LS2 9JT, United Kingdom
‡Department of Physics and Astronomy, University of Manitoba, Manitoba, R3T 2N2, Canada

ACS Nano, https://pubs.acs.org/doi/10.1021/acsnano.8b08884

Contact E-mails: Gary.Paterson@glasgow.ac.uk, Stephen.McVitie@glasgow.ac.uk, Robert.Stamps@umanitoba.ca

Data files are described below. Files with the mp4 extension are encoded in H264 - MPEG-4 AVC (part 10) and can be opened in any compatible software. Compatible video players include the open source VLC media player (currently available at https://www.videolan.org/). Note that any scalebars within the videos are not applicable to the data. Details of the imaging conditions and data processing are described in the manuscript and supporting information (see manuscript for details).

Source Fresnel videos for the field driven reversal of pinwheel ASI arrays in the decreasing field direction:
    -13_deg.mp4
    -6_deg.mp4
    0_deg.mp4
    30_deg.mp4

The filename indicates the applied field angle with respect to the array edge, as defined in the manuscript.