The theoretical framework for the computation of electromagnetic fields and electron optical phase-shifts in Fourier space has been recently applied to objects with long-range fringing fields, such as reverse-biased p-n junctions and magnetic stripe domains near a specimen edge. In addition to new analytical results, in this work, we present a critical comparison between numerical and analytical computations. The influence of explicit and implicit boundary conditions on the phase shifts and phase-contrast images is also investigated in detail. (c) 2005 Elsevier B.V. All rights reserved.
Electron optical phase-shifts by Fourier methods: Analytical versus numerical calculations / Fazzini, R; Pozzi, G; Beleggia, M. - In: ULTRAMICROSCOPY. - ISSN 0304-3991. - 104:3-4(2005), pp. 193-205. [10.1016/j.ultramic.2005.04.002]
Electron optical phase-shifts by Fourier methods: Analytical versus numerical calculations
Beleggia M
2005
Abstract
The theoretical framework for the computation of electromagnetic fields and electron optical phase-shifts in Fourier space has been recently applied to objects with long-range fringing fields, such as reverse-biased p-n junctions and magnetic stripe domains near a specimen edge. In addition to new analytical results, in this work, we present a critical comparison between numerical and analytical computations. The influence of explicit and implicit boundary conditions on the phase shifts and phase-contrast images is also investigated in detail. (c) 2005 Elsevier B.V. All rights reserved.
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