Imperial College London
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Professor Lesley F Cohen

Faculty of Natural Sciences, Department of Physics

Associate Provost (Equality, Diversity and Inclusion)
 
 
 
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Contact

 

+44 (0)20 7594 7598l.cohen Website CV

 
 
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Assistant

 

Mrs Carolyn Dale +44 (0)20 7594 7579

 
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Location

 

1111Blackett LaboratorySouth Kensington Campus

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Summary

 

Publications

Citation

BibTex format

@article{Dion:2019:10.1103/PhysRevB.100.054433,
author = {Dion, T and Arroo, DM and Yamanoi, K and Kimura, T and Gartside, JC and Cohen, LF and Kurebayashi, H and Branford, WR},
doi = {10.1103/PhysRevB.100.054433},
journal = {Physical Review B},
title = {Tunable magnetization dynamics in artificial spin ice via shape anisotropy modification},
url = {http://dx.doi.org/10.1103/PhysRevB.100.054433},
volume = {100},
year = {2019}
}
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RIS format (EndNote, RefMan)

TY  - JOUR
AB  - Ferromagnetic resonance (FMR) is performed on kagome artificial spin ice (ASI) formed of disconnected Ni80 Fe20 nanowires. Here we break the threefold angular symmetry of the kagome lattice by altering the coercive field of each sublattice via shape anisotropy modification. This allows for distinct high-frequency responses when a magnetic field is aligned along each sublattice and additionally enables simultaneous spin-wave resonances to be excited in all nanowire sublattices, unachievable in conventional kagome ASI. The different coercive field of each sublattice allows selective magnetic switching via global field, unlocking novel microstates inaccessible in homogeneous-nanowire ASI. The distinct spin-wave spectra of these states are detected experimentally via FMR and linked to underlying microstates using micromagnetic simulation.
AU  - Dion,T
AU  - Arroo,DM
AU  - Yamanoi,K
AU  - Kimura,T
AU  - Gartside,JC
AU  - Cohen,LF
AU  - Kurebayashi,H
AU  - Branford,WR
DO  - 10.1103/PhysRevB.100.054433
PY  - 2019///
SN  - 2469-9950
TI  - Tunable magnetization dynamics in artificial spin ice via shape anisotropy modification
T2  - Physical Review B
UR  - http://dx.doi.org/10.1103/PhysRevB.100.054433
UR  - http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=WOS:000482446800001&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=1ba7043ffcc86c417c072aa74d649202
UR  - http://hdl.handle.net/10044/1/73341
VL  - 100
ER  -
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