Tailoring the Electronic Properties of Epitaxial Graphene on Metallic Substrates

by Daniela Pacilè (Dipartimento di Fisica, Università della Calabria)

Tuesday 18 Jun 2013, 16:00 → 18:00 Europe/Rome

Aula Conversi (Dipartimento di Fisica - Ed. G. Marconi)

The low energy excitations in graphene behave as massless Dirac fermions and obey the relativistic Dirac equation where the speed of light is replaced by the Fermi velocity. New electronic properties result from epitaxial growth of graphene on metallic surfaces, due to electron hybridization and structural modifications. Selected studies making use of synchrotron radiation-based spectroscopic techniques will illustrate aspects of the electronic interactions of graphene with metal substrates of diverse electronic and crystal structure. I will show how the electron group velocity and bandgaps can be tailored by periodic perturbing potential, doping, intercalation, and hybridization with the supporting substrate. Moreover, I will illustrate how the structural and electronic properties of epitaxial graphene are modified by the interaction with magnetic layers.