title: Unravelling suitable graphene-metal contacts for graphene-based plasmonic devices.
abstract: Plasmonic excitations in pristine and air-exposed graphene-Ru and graphene-Pt contacts have been investigated by using high-resolution electron energy loss spectroscopy. Loss measurements show that the effects of air exposure are very different in these two systems. While in graphene-Ru contacts, plasmons are completely quenched, plasmons in the graphene-Pt interface show only a frequency shift together with an overall intensity attenuation. These results pose significant questions as regards the stability in an ambient air atmosphere of graphene-based plasmonic devices and indicate a suitable choice of graphene-metal contacts.
authors.affiliation: Università degli Studi della Calabria, Dipartimento di Fisica, Italy.
authors.forename: Antonio
authors.initials: A
authors.lastname: Politano
authors.forename: Gennaro
authors.initials: G
authors.lastname: Chiarello