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Colloquium: December 11, 2013

 
 
Marco Polini*
Illuminating graphene
Day Time Place
December 11, 2013 Wednesday 16:00 EE01

Host: TBA

ABSTRACT — Graphene, the first and best studied two-dimensional material, has attracted a great deal of attention since its isolation through the “scotch tape” technique at the University of Manchester in 2004 [1]. In this Colloquium I will review a series of outstanding physical properties of graphene, focusing on those that are triggered by the interaction between light and its carriers [2]. More precisely, I will first discuss about the fundamental properties of “Dirac plasmons” [3] in this material, highlighting the main differences with respect to plasmons in ordinary metals and their potential use in the field of plasmonics [4]. I will then present recent experimental and theoretical results [5] on the initial stages of the dynamics of hot carriers in graphene, and, in particular, on the controversial issue of “carrier multiplication”.

Bibliography

[1] A.K. Geim and K.S. Novoselov, Nature Mater. 6, 183 (2007).
[2] F. Bonaccorso, Z. Sun, T. Hasan, and A.C. Ferrari, Nature Photon. 4, 611 (2010).
[3] A.N. Grigorenko, M. Polini, and K.S. Novoselov, Nature Photon. 6, 749 (2012).
[4] A. Principi, G. Vignale, M. Carrega, and M. Polini, Phys. Rev. B 88, 121405(R) (2013).
[5] D. Brida, A. Tomadin, C. Manzoni, Y.J. Kim, A. Lombardo, S. Milana, R.R. Nair, K.S. Novoselov, A.C. Ferrari, G. Cerullo, and M. Polini, Nature Commun. 4, 1987 (2013).

*NEST, Istituto Nanoscienze-CNR and Scuola Normale Superiore, Pisa, Italy

The Physics Colloquia are designed to address a non-specialist, broad audience and introduce topics of contemporary research through lectures by leading experts. We warmly invite all members of the student body, including undergraduates enrolled in any programme.

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