Imperial College London
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Professor SirJohnPendry

Faculty of Natural Sciences, Department of Physics

Chair in Theoretical Solid State Physics
 
 
 
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Contact

 

+44 (0)20 7594 7606j.pendry CV

 
 
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Assistant

 

Mrs Carolyn Dale +44 (0)20 7594 7579

 
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Location

 

808Blackett LaboratorySouth Kensington Campus

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Summary

 

Publications

Citation

BibTex format

@unpublished{Galiffi:2019,
author = {Galiffi, E and Huidobro, PA and Goncalves, PAD and Mortensen, NA and Pendry, JB},
publisher = {arXiv},
title = {Probing graphene's nonlocality with singular metasurfaces},
url = {https://arxiv.org/abs/1908.09320v2},
year = {2019}
}
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RIS format (EndNote, RefMan)

TY  - UNPB
AB  - Singular graphene metasurfaces, conductivity gratings realized by periodically suppressing the local doping level of a graphene sheet, have recently been proposed to efficiently harvest THz light and couple it to surface plasmons over broad absorption bands, achieving remarkably high field enhancement. However, the large momentum wavevectors thus attained are sensitive to the nonlocal behaviour of the underlying electron liquid. Here, we extend the theory of singular graphene metasurfaces to account for the full nonlocal optical response of graphene and discuss the resulting impact on the plasmon resonance spectrum. Finally, we propose a simple local analogue model that is able to reproduce the effect of nonlocality in local-response calculations by introducing a constant conductivity offset, which could prove a valuable tool in the modelling of more complex experimental graphene-based platforms.
AU  - Galiffi,E
AU  - Huidobro,PA
AU  - Goncalves,PAD
AU  - Mortensen,NA
AU  - Pendry,JB
PB  - arXiv
PY  - 2019///
TI  - Probing graphene's nonlocality with singular metasurfaces
UR  - https://arxiv.org/abs/1908.09320v2
UR  - http://hdl.handle.net/10044/1/77850
ER  -
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