A model for terahertz plasmons in graphene

  • A. G. Every
  • R. Warmbier
  • A. Quandt
Part of the following topical collections:
  1. Advanced Materials for photonics and electronics


We derive and analyze a 2D model for plasmons, in order to understand the general preconditions for the appearance of THz plasmons in low-dimensional nanosystems like graphene. Using experimental data and back of the envelope type calculations, we discuss the typical frequency ranges of plasmon resonances in such systems. Next we compare our results to recent ab initio calculations for ideal graphene, and show that these are consistent with the predictions of a 3D plasmon model, rather than a 2D model. The validity of the ab initio calculation does not extend to long-wavelength regime where our 2D model holds.


Plasmon Graphene Terahertz 



The authors would like to thank the National Institute for Theoretical Physics (NITheP), the Mandelstam Institute for Theoretical Physics (MITP), the Materials Physics Research Institute (MPRI) and the DST-NRF Centre of Excellence in Strong Materials (CoE-SM) for support. We also acknowledge additional support through a bilateral project Plasmonics for a better efficiency of solar cells between South Africa and Italy (contributo del Ministero degli Affari Esteri e della Cooperazione Internazionale, Direzione Generale per la Promozione del Sistema Paese).


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Copyright information

© Springer Science+Business Media New York 2016

Authors and Affiliations

  1. 1.School of PhysicsUniversity of the WitwatersrandJohannesburgSouth Africa
  2. 2.Enrico Fermi CentreRomaItaly

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