CUED Publications database

Intrinsic terahertz plasmon signatures in chemical vapour deposited graphene

Badhwar, S and Sibik, J and Kidambi, PR and Beere, HE and Axel Zeitler, J and Hofmann, S and Ritchie, DA (2013) Intrinsic terahertz plasmon signatures in chemical vapour deposited graphene. Applied Physics Letters, 103. ISSN 0003-6951

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Abstract

Plasmonic resonance at terahertz (THz) frequencies can be achieved by gating graphene grown via chemical vapour deposition (CVD) to a high carrier concentration. THz time domain spectroscopy of such gated monolayer graphene shows resonance features around 1.6 THz, which appear as absorption peaks when the graphene is electrostatically p-doped and change to enhanced transmission when the graphene is n-doped. Superimposed on the Drude-like frequency response of graphene, these resonance features are related to the inherent poly-crystallinity of CVD graphene. An understanding of these features is necessary for the development of future THz optical elements based on CVD graphene. © 2013 AIP Publishing LLC.

Item Type: Article
Subjects: UNSPECIFIED
Divisions: Div B > Solid State Electronics and Nanoscale Science
Depositing User: Cron Job
Date Deposited: 07 Mar 2014 11:28
Last Modified: 08 Dec 2014 02:12
DOI: 10.1063/1.4821157