Journal
PHYSICAL REVIEW B
Volume 97, Issue 24, Pages -Publisher
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevB.97.245405
Keywords
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Funding
- European Commission through the project Graphene-Driven Revolutions in ICT and Beyond [785219]
- Portuguese Foundation for Science and Technology (FCT) [UID/FIS/04650/2013]
- FCT [CFUM-BI-14/2016]
- FPI [BES-2014-068504]
- Government of Catalonia trough the SGR [2014-SGR-1535]
- Spanish Ministry of Economy and Competitiveness, through the Severo Ochoa Programme for Centres of Excellence in RD [SEV-2015-0522]
- Fundacio Cellex Barcelona, CERCA Programme/Generalitat de Catalunya
- Mineco Grants Ramn y Cajal [RYC-2012-12281]
- Plan Nacional [FIS2013-47161-P, FIS2014-59639-JIN]
- European Union Seventh Framework Programme [696656]
- ERC starting Grant [307806]
- project GRASP [FP7-ICT-2013-613024-GRASP]
- VILLUM FONDEN [16498]
- University of Southern Denmark (SDU 2020 funding)
- Danish National Research Foundation [DNRF103]
- Villum Fonden [00016498] Funding Source: researchfish
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In this paper, we analyze the effects of nonlocality on the optical properties of a system consisting of a thin metallic film separated from a graphene sheet by a hexagonal boron nitride (hBN) layer. We show that nonlocal effects in the metal have a strong impact on the spectrum of the surface plasmon-polaritons on graphene. If the graphene sheet is nanostructured into a periodic grating, we show that the resulting extinction curves can be used to shed light on the importance of nonlocal effects in metals. Therefore graphene surface plasmons emerge as a tool for probing nonlocal effects in metallic nanostructures, including thin metallic films. As a byproduct of our study, we show that nonlocal effects may lead to smaller losses for the graphene plasmons than what is predicted by a local calculation. Finally, we demonstrate that such nonlocal effects can be very well mimicked using a local theory with an effective spacer thickness larger than its actual value.
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