Theory of the plasma-wave photoresponse of a gated graphene sheet

Tomadin, Andrea and Polini, Marco (2013) Theory of the plasma-wave photoresponse of a gated graphene sheet. Physical review B, 88 (20). ISSN 1098-0121

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Abstract

The photoresponse of graphene has recently received considerable attention. The main mechanisms yielding a finite dc response to an oscillating radiation field which have been investigated include responses of photovoltaic, photothermoelectric, and bolometric origin. In this article, we present a fully analytical theory of a photoresponse mechanism which is based on the excitation of plasma waves in a gated graphene sheet. By employing the theory of relativistic hydrodynamics, we demonstrate that plasma-wave photodetection is substantially influenced by the massless Dirac fermion character of carriers in graphene, and that the efficiency of photodetection can be improved with respect to that of ordinary parabolic-band electron fluids in semiconductor heterostructures.

Item Type:
Journal Article
Journal or Publication Title:
Physical review B
ID Code:
129040
Deposited By:
Deposited On:
22 Nov 2018 10:22
Refereed?:
Yes
Published?:
Published
Last Modified:
24 Sep 2020 04:22