title: Phase contrast image simulations for electron holography of magnetic and electric fields.
abstract: The research on flux line lattices and pancake vortices in superconducting materials, carried out within a long and fruitful collaboration with Akira Tonomura and his group at the Hitachi Advanced Research Laboratory, led us to develop a mathematical framework, based on the reciprocal representation of the magnetic vector potential, that enables us to simulate realistic phase images of fluxons. The aim of this paper is to review the main ideas underpinning our computational framework and the results we have obtained throughout the collaboration. Furthermore, we outline how to generalize the approach to model other samples and structures of interest, in particular thin ferromagnetic films, ferromagnetic nanoparticles and p-n junctions.
authors.affiliation: Center for Electron Nanoscopy, Technical University of Denmark, DK-2800 Kgs, Lyngby, Denmark. mb@cen.dtu.dk
authors.forename: Marco
authors.initials: M
authors.lastname: Beleggia
authors.forename: Giulio
authors.initials: G
authors.lastname: Pozzi
mesh_terms: D004560:Electricity; D006696:Holography / Q000379:methods*; D060526:Magnetic Fields; D008280:Magnetics; D058185:Magnetite Nanoparticles / Q000032:analysis*; D046529:Microscopy, Electron, Transmission / Q000379:methods*
chemical_list: D058185:Magnetite Nanoparticles
keywords: electron holography; image simulations; phase microscopy; superconducting vortices