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Title: Nanoscale three-dimensional reconstruction of electric and magnetic stray fields around nanowires

Static electromagnetic stray fields around nanowires (NWs) are characteristic for a number of important physical effects such as field emission or magnetic force microscopy. Consequently, an accurate characterization of these fields is of high interest and electron holographic tomography (EHT) is unique in providing tomographic 3D reconstructions at nm spatial resolution. However, several limitations of the experimental setup and the specimen itself are influencing EHT. Here, we show how a deliberate restriction of the tomographic reconstruction to the exterior of the NWs can be used to mitigate these limitations facilitating a quantitative 3D tomographic reconstruction of static electromagnetic stray fields at the nanoscale. As an example, we reconstruct the electrostatic stray field around a GaAs-AlGaAs core shell NW and the magnetic stray field around a Co{sub 2}FeGa Heusler compound NW.
Authors:
; ;  [1] ; ; ;  [2]
  1. Triebenberg Laboratory, Institute for Structure Physics, Technische Universität Dresden, 01062 Dresden (Germany)
  2. Max Planck Institut for Chemical Physics of Solids, Nöthnitzer Str. 40, 01187 Dresden (Germany)
Publication Date:
OSTI Identifier:
22310675
Resource Type:
Journal Article
Resource Relation:
Journal Name: Applied Physics Letters; Journal Volume: 105; Journal Issue: 17; Other Information: (c) 2014 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
77 NANOSCIENCE AND NANOTECHNOLOGY; ALUMINIUM COMPOUNDS; ATOMIC FORCE MICROSCOPY; COBALT COMPOUNDS; ELECTROMAGNETIC FIELDS; ELECTRONS; FIELD EMISSION; GALLIUM ARSENIDES; GALLIUM COMPOUNDS; HEUSLER ALLOYS; HOLOGRAPHY; IRON COMPOUNDS; MAGNETIC FIELDS; NANOWIRES; QUANTUM WIRES; SPATIAL RESOLUTION; THREE-DIMENSIONAL CALCULATIONS; TOMOGRAPHY