title: Site-specific force-vector field studies of KBr(001) by atomic force microscopy.
abstract: The spatial orientation and magnitude of forces acting between the tip atoms of an atomic force microscope tip and the surface atoms of an atomically clean surface can be determined by force field measurements. We compare two force-vector fields obtained along and between the ionic lattice sites of a KBr(001) surface with atomistic simulations for two differently configured tips. This careful analysis allows us to identify the K(+)-termination of the tip apex as well as the polarity of the KBr lattice.
authors.affiliation: Physikalisches Institut, Westfälische Wilhelms-Universität Münster, Wilhelm-Klemm-Strasse 10, 48149 Münster, Germany.
authors.forename: Kai
authors.initials: K
authors.lastname: Ruschmeier
authors.forename: André
authors.initials: A
authors.lastname: Schirmeisen
authors.forename: Regina
authors.initials: R
authors.lastname: Hoffmann