Soft-boundary graphene nanoribbon formed by a graphene sheet above a perturbed ground plane: conductivity profile and SPP modal current distribution

An infinite sheet of graphene lying above a perturbed ground plane is studied. The perturbation is a two-dimensional ridge, and a bias voltage is applied between the graphene and the ground plane, resulting in a graphene nanoribbon-like structure with a soft boundary (SB). The spatial distribution o...

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Bibliographic Details
Published inJournal of Optics Vol. 15; no. 11; pp. 1 - 7
Main Authors Forati, Ebrahim, Hanson, George W
Format Journal Article
LanguageEnglish
Published IOP Publishing 01.11.2013
Subjects
Bias
Current distribution
Electric potential
Graphene
graphene conductivity
graphene nanoribbon
Ground plane
Nanostructure
Ridges
surface plasmon polariton
Voltage
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Summary:An infinite sheet of graphene lying above a perturbed ground plane is studied. The perturbation is a two-dimensional ridge, and a bias voltage is applied between the graphene and the ground plane, resulting in a graphene nanoribbon-like structure with a soft boundary (SB). The spatial distribution of the graphene conductivity forming the SB is studied as a function of the ridge parameters and the bias voltage. The current distribution of the fundamental transverse magnetic surface plasmon polariton (SPP) is considered. The effect of the ridge parameters and shape of the SB on the current distributions are investigated, and the conditions are studied under which the mode remains confined to the vicinity of the ridge region.
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ISSN:2040-8978
2040-8986
1464-4258
DOI:10.1088/2040-8978/15/11/114006