Ballistic transport through irradiated graphene

Jonathan Atteia (1) , Jens H Bardarson (2, 3) , Jérôme Cayssol (1)

1 LOMA - Laboratoire Ondes et Matière d'Aquitaine
2 Department of Physics [Stockholm]
3 MPI-PKS - Max-Planck-Institut für Physik komplexer Systeme

The coherent charge transport through an illuminated graphene ribbon is studied as a function of electronic doping and characteristics of the electromagnetic driving, for monochromatic circularly polarized light. We focus on the DC current carried by 2D bulk carriers which is dominant (over edge transport) for short and wide enough samples. We investigate how the ballistic conductance suppression, due to photon resonances between the valence and conduction bands, evolves when the experimentally tunable parameters are varied. The residual conductance can be associated with evanescent states and related to dynamical gaps in the Floquet quasienergy spectrum.

Domaines: Systèmes mésoscopiques et effet Hall quantique [cond-mat.mes-hall]

Jonathan Atteia, Jens H Bardarson, Jérôme Cayssol. Ballistic transport through irradiated graphene. Physical Review B: Condensed Matter and Materials Physics (1998-2015), 2017, 96 (24), pp.245404. ⟨10.1103/PhysRevB.96.245404⟩. ⟨hal-01679895⟩