title: Manipulation of subsurface donors in ZnO.
abstract: Single donors close to the ZnO(0001) surface are investigated with scanning tunneling microscopy. Their binding energies and depths are determined from spatially resolved spectra of the differential conductance. At elevated bias of the STM tip, vertical motion of the donors can be induced. The direction of the motion can be controlled by the bias polarity.
authors.affiliation: Institut für Experimentelle und Angewandte Physik, Christian-Albrechts-Universität zu Kiel, D-24098 Kiel, Germany. zheng@physik.uni-kiel.de
authors.forename: Hao
authors.initials: H
authors.lastname: Zheng
authors.forename: Alexander
authors.initials: A
authors.lastname: Weismann
authors.forename: Richard
authors.initials: R
authors.lastname: Berndt