title: Droplet Epitaxy Image Contrast in Mirror Electron Microscopy.
abstract: Image simulation methods are applied to interpret mirror electron microscopy (MEM) images obtained from a movie of GaAs droplet epitaxy. Cylindrical symmetry of structures grown by droplet epitaxy is assumed in the simulations which reproduce the main features of the experimental MEM image contrast, demonstrating that droplet epitaxy can be studied in real-time. It is therefore confirmed that an inner ring forms at the droplet contact line and an outer ring (or skirt) occurs outside the droplet periphery. We believe that MEM combined with image simulations will be increasingly used to study the formation and growth of quantum structures.
authors.affiliation: School of Physics, Monash University, Melbourne, Victoria, 3800, Australia.
authors.forename: S M
authors.initials: SM
authors.lastname: Kennedy
authors.affiliation: Department of Civil Engineering, Monash University, Melbourne, Victoria, 3800, Australia.
authors.forename: C X
authors.initials: CX
authors.lastname: Zheng
authors.affiliation: School of Physics and Astronomy, Cardiff University, Cardiff, CF24 3AA, UK. jessonde@cardiff.ac.uk.
authors.forename: D E
authors.initials: DE
authors.lastname: Jesson
keywords: Droplet epitaxy; Gallium arsenide; Image simulation; Mirror electron microscopy