Magnetic vortex writing and local reversal seeding in artificial spin-vortex ice via all-optical and surface-probe control
File(s)
Published version
Author(s)
Type
Journal Article
Abstract
Artificial spin-vortex ice (ASVI) is a reconfigurable nanomagnetic metamaterial consisting of magnetic nanoislands tailored to support both Ising macrospin and vortex textures. ASVI has recently shown functional applications including reconfigurable magnonics and neuromorphic computing, where the introduction of vortex textures broadens functionality beyond conventional artificial spin ice, which only supports macrospin states. However, local control of writing vortex states in ASVI remains an open challenge. Here, we demonstrate techniques for field-free local magnetic vortex writing. We expand ASVI to support metastable macrospin, single-vortex, and double-vortex states. All-optical writing via focused laser illumination can write double-vortex textures, and surface-probe writing using an MFM tip can write single-vortex states. We leverage this writing to tailor and explore the reconfigurable energy landscape of ASVI, demonstrating programmable local seeding of avalanche-like reversal events. The writing techniques reported here expand the suite of nanomagnetic control techniques, with a host of future applications including fundamental studies of avalanche dynamics, physical memory, and direct writing of nanomagnetic ‘‘weights’’ in physical neuromorphic neural networks.
Date Issued
2026-05-01
Date Acceptance
2026-03-26
Citation
Physical Review B: Condensed Matter and Materials Physics, 2026, 113 (18)
ISSN
1098-0121
Publisher
American Physical Society
Journal / Book Title
Physical Review B: Condensed Matter and Materials Physics
Volume
113
Issue
18
Copyright Statement
Published by the American Physical Society under the terms of the Creative Commons Attribution 4.0 International license. Further distribution of this work must maintain attribution to the author(s) and the published article's title, journal citation, and DOI.
License URL
Identifier
10.1103/ldgl-qbxb
Publication Status
Published
Article Number
184426
Date Publish Online
2026-05-07