title: Atomic scale defect analysis in the scanning transmission electron microscope.
abstract: Z-contrast imaging and electron energy loss spectroscopy in the scanning transmission electron microscope provide the ability to investigate the structure-composition-property relationship at individual defects on the atomic scale. In this article, the main principles behind the techniques will be described. The application of these methods to the analysis of individual dislocations in GaN will also be discussed. In this case, the atomic scale methods indicate that many of the structural and electronic properties of dislocations are modified by the presence of impurities, such as oxygen.
authors.affiliation: Department of Physics, University of California-Davis, Davis, California 95616, USA. iarslan@sandia.gov
authors.forename: Ilke
authors.initials: I
authors.lastname: Arslan
authors.forename: Nigel D
authors.initials: ND
authors.lastname: Browning
mesh_terms: D005708:Gallium / Q000737:chemistry*; D017348:Microscopy, Electron, Scanning Transmission / Q000379:methods*
chemical_list: C473348:gallium nitride; D005708:Gallium