Imperial College London
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ProfessorWillBranford

Faculty of Natural Sciences, Department of Physics

Professor of Solid State Physics
 
 
 
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Contact

 

+44 (0)20 7594 6674w.branford Website

 
 
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Location

 

912Blackett LaboratorySouth Kensington Campus

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Summary

 

Publications

Citation

BibTex format

@article{Chaurasiya:2021:10.1021/acsnano.1c02537,
author = {Chaurasiya, AK and Mondal, AK and Gartside, JC and Stenning, KD and Vanstone, A and Barman, S and Branford, WR and Barman, A},
doi = {10.1021/acsnano.1c02537},
journal = {ACS Nano},
pages = {11734--11742},
title = {Comparison of spin-wave modes in connected and disconnected artificial spin ice nanostructures using Brillouin light scattering spectroscopy},
url = {http://dx.doi.org/10.1021/acsnano.1c02537},
volume = {15},
year = {2021}
}
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RIS format (EndNote, RefMan)

TY  - JOUR
AB  - Artificial spin ice systems have seen burgeoning interest due to their intriguing physics and potential applications in reprogrammable memory, logic, and magnonics. Integration of artificial spin ice with functional magnonics is a relatively recent research direction, with a host of promising results. As the field progresses, direct in-depth comparisons of distinct artificial spin systems are crucial to advancing the field. While studies have investigated the effects of different lattice geometries, little comparison exists between systems comprising continuously connected nanostructures, where spin-waves propagate via dipole-exchange interaction, and systems with nanobars disconnected at vertices, where spin-wave propagation occurs via stray dipolar field. Gaining understanding of how these very different coupling methods affect both spin-wave dynamics and magnetic reversal is key for the field to progress and provides crucial system-design information including for future systems containing combinations of connected and disconnected elements. Here, we study the magnonic response of two kagome spin ices via Brillouin light scattering, a continuously connected system and a disconnected system with vertex gaps. We observe distinct high-frequency dynamics and magnetization reversal regimes between the systems, with key distinctions in spin-wave localization and mode quantization, microstate trajectory during reversal and internal field profiles. These observations are pertinent for the fundamental understanding of artificial spin systems and broader design and engineering of reconfigurable functional magnonic crystals.
AU  - Chaurasiya,AK
AU  - Mondal,AK
AU  - Gartside,JC
AU  - Stenning,KD
AU  - Vanstone,A
AU  - Barman,S
AU  - Branford,WR
AU  - Barman,A
DO  - 10.1021/acsnano.1c02537
EP  - 11742
PY  - 2021///
SN  - 1936-0851
SP  - 11734
TI  - Comparison of spin-wave modes in connected and disconnected artificial spin ice nanostructures using Brillouin light scattering spectroscopy
T2  - ACS Nano
UR  - http://dx.doi.org/10.1021/acsnano.1c02537
UR  - http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=WOS:000679406500067&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=1ba7043ffcc86c417c072aa74d649202
UR  - https://pubs.acs.org/doi/10.1021/acsnano.1c02537
UR  - http://hdl.handle.net/10044/1/92263
VL  - 15
ER  -
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