Reconfigurable magnonic mode-hybridisation and spectral control in a
bicomponent artificial spin ice
bicomponent artificial spin ice
File(s)s41467-021-22723-x.pdf (4.87 MB)
Published version
Author(s)
Type
Journal Article
Abstract
Strongly-interacting nanomagnetic arrays are finding increasing use as model
host systems for reconfigurable magnonics. The strong inter-element coupling
allows for stark spectral differences across a broad microstate space due to
shifts in the dipolar field landscape. While these systems have yielded
impressive initial results, developing rapid, scaleable means to access abroad
range of spectrally-distinct microstates is an open research problem.We present
a scheme whereby square artificial spin ice is modified by widening a
'staircase' subset of bars relative to the rest of the array, allowing
preparation of any ordered vertex state via simple global-field protocols.
Available microstates range from the system ground-state to high-energy
'monopole' states, with rich and distinct microstate-specific magnon spectra
observed. Microstate-dependent mode-hybridisation and anticrossings are
observed at both remanence and in-field with dynamic coupling strength tunable
via microstate-selection. Experimental coupling strengths are found up to g /
2$\pi$ = 0.15 GHz. Microstate control allows fine mode-frequency shifting, gap
creation and closing, and active mode number selection.
host systems for reconfigurable magnonics. The strong inter-element coupling
allows for stark spectral differences across a broad microstate space due to
shifts in the dipolar field landscape. While these systems have yielded
impressive initial results, developing rapid, scaleable means to access abroad
range of spectrally-distinct microstates is an open research problem.We present
a scheme whereby square artificial spin ice is modified by widening a
'staircase' subset of bars relative to the rest of the array, allowing
preparation of any ordered vertex state via simple global-field protocols.
Available microstates range from the system ground-state to high-energy
'monopole' states, with rich and distinct microstate-specific magnon spectra
observed. Microstate-dependent mode-hybridisation and anticrossings are
observed at both remanence and in-field with dynamic coupling strength tunable
via microstate-selection. Experimental coupling strengths are found up to g /
2$\pi$ = 0.15 GHz. Microstate control allows fine mode-frequency shifting, gap
creation and closing, and active mode number selection.
Date Issued
2021-03-18
Date Acceptance
2021-03-22
Citation
Nature Communications, 2021, 12
ISSN
2041-1723
Publisher
arXiv
Journal / Book Title
Nature Communications
Volume
12
Copyright Statement
© The Author(s) 2021. This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/.
License URL
Sponsor
Engineering & Physical Science Research Council (EPSRC)
The Leverhulme Trust
Identifier
http://arxiv.org/abs/2101.07767v3
Grant Number
EP/P02520X/1
RPG-2017-257
Subjects
cond-mat.mes-hall
cond-mat.mes-hall
physics.app-ph
Publication Status
Published
Article Number
ARTN 2488