title: Polarity effects on ZnO films grown along the nonpolar [1120] direction.
abstract: The surface electrical properties of ZnO thin films grown along the nonpolar [1120] direction have been investigated by Kelvin probe microscopy on a nanometer scale. Two different charge domains, with a 75 meV work function difference, coexist within the ZnO surface, which is covered by rhombohedral pyramids whose sidewalls are shown to be {1011}-type planes. The presence and relative orientation of the two kinds of charge domains are explained in terms of the atomic arrangement at the {1011} polar surfaces.
authors.affiliation: Departament Física Aplicada i Electromagnetisme, Universitat de València, C/Dr. Moliner 50, 46100 Burjassot, Spain.
authors.forename: Jesús
authors.initials: J
authors.lastname: Zúñiga-Pérez
authors.forename: Vicente
authors.initials: V
authors.lastname: Muñoz-Sanjosé
authors.forename: Elisa
authors.initials: E
authors.lastname: Palacios-Lidón
authors.forename: Jaime
authors.initials: J
authors.lastname: Colchero