title: Charging C60 islands with the AFM tip.
abstract: We show that electrons can be transferred on demand from an AFM tip into single bulk-like C60 islands, which are supported on the insulating NaCl(001) surface. We exemplify this by controlled charge-manipulation experiments conducted in ultrahigh vacuum by noncontact AFM (nc-AFM), electrostatic force microscopy (EFM) and Kelvin probe force microscopy (KPFM). KPFM shows a homogeneous contrast at the islands, which is a signature for an equal distribution of the electrons in the T1u band. The charge dissipates during half a day due to an interaction of the charged C60 islands with defects in the near surface region of NaCl. Our results open the perspective in photo-voltaics to study charge attachment, stability and charge exchange with the environment of any C60 bulk-like system.
authors.affiliation: CNRS, Aix-Marseille University, CINaM UMR 7325, Campus de Luminy, Case 913, 13288 Marseille Cedex 09, France. barth@cinam.univ-mrs.fr.
authors.forename: Brice
authors.initials: B
authors.lastname: Hoff
authors.affiliation: CNRS, Aix-Marseille University, CINaM UMR 7325, Campus de Luminy, Case 913, 13288 Marseille Cedex 09, France. barth@cinam.univ-mrs.fr.
authors.forename: Claude R
authors.initials: CR
authors.lastname: Henry
authors.affiliation: CNRS, Aix-Marseille University, CINaM UMR 7325, Campus de Luminy, Case 913, 13288 Marseille Cedex 09, France. barth@cinam.univ-mrs.fr.
authors.forename: Clemens
authors.initials: C
authors.lastname: Barth