title: Atomic scale Kelvin probe force microscopy studies of the surface potential variations on the TiO2(110) surface.
abstract: From an interplay of simultaneous Kelvin probe force microscopy and noncontact atomic force microscopy we study atomic-scale variations in the electronic surface potential on TiO(2)(110). Both imaging channels reveal an atomic contrast reflected by the geometry and charged state of the alternating rows of Ti and O surface atoms. From a thorough cross-section analysis we add significant trust to the concept of a local contact potential difference, and determine from this the chemical identity of individual surface species and their role in setting up the local surface potential.
authors.affiliation: Interdisciplinary Nanoscience Center (iNANO) and Department of Physics and Astronomy, University of Aarhus, Denmark.
authors.forename: G H
authors.initials: GH
authors.lastname: Enevoldsen
authors.forename: T
authors.initials: T
authors.lastname: Glatzel
authors.forename: M C
authors.initials: MC
authors.lastname: Christensen
authors.forename: J V
authors.initials: JV
authors.lastname: Lauritsen
authors.forename: F
authors.initials: F
authors.lastname: Besenbacher