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

Journal Article · Mon Oct 27 00:00:00 EDT 2014 · Applied Physics Letters

DOI:https://doi.org/10.1063/1.4900826· OSTI ID:22310675

Lubk, A.; Wolf, D.; Sturm, S. ^[1]; Simon, P.; Wang, C.; Felser, C. ^[2]

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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)

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.

• OSTI ID: 22310675
• Journal Information: Applied Physics Letters, Vol. 105, Issue 17; Other Information: (c) 2014 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA); ISSN 0003-6951
• Country of Publication: United States
• Language: English

Related Subjects

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