Photoresponse in Multilayer Graphene during the Passage of a Surface Acoustic Wave

In this Letter, we studied the photoresponse in multilayer graphene on a lithium niobate (LiNbO 3 ) crystal under the conditions of an electric potential applied to graphene and transmission of a surface acoustic wave. The acoustoelectric current in graphene when irradiated with light is shown to ei...

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Bibliographic Details
Published in:Technical physics letters 2020-03, Vol.46 (3), p.220-223
Main Authors: Kononenko, O. V., Emelin, E. V., Matveev, V. N., Roshchupkin, D. V.
Format: Article
Language:English
Subjects:
Classical and Continuum Physics
Graphene
Incident light
Lithium niobates
Multilayers
Physics
Physics and Astronomy
Polarity
Surface acoustic waves
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Summary:In this Letter, we studied the photoresponse in multilayer graphene on a lithium niobate (LiNbO 3 ) crystal under the conditions of an electric potential applied to graphene and transmission of a surface acoustic wave. The acoustoelectric current in graphene when irradiated with light is shown to either increase or decrease depending on the polarity of the potential applied to graphene. A surface acoustic wave causes the appearance of a periodic charge lattice in graphene that enhances the interaction with incident light, which leads to an increase in the photoresponse.
ISSN:1063-7850
1090-6533
DOI:10.1134/S1063785020030086