Simple method for optimization of classical electron magnetic circular dichroism measurements: The role of structure factor and extinction distances
Schneider S, Negi D, Stolt MJ, Jin S, Spiegelberg J, Pohl D, Rellinghaus B, Goennenwein STB, Nielsch K, Rusz J (2018)
Publication Type: Journal article
Publication year: 2018
Journal
Book Volume: 2
Article Number: 113801
Journal Issue: 11
DOI: 10.1103/PhysRevMaterials.2.113801
Abstract
Electron magnetic circular dichroism (EMCD), the electron wave analog of x-ray magnetic circular dichroism (XMCD), allows for the element specific measurement of the spin and orbital magnetic moments with up to nanometer resolution. However, due to dynamical diffraction effects, the signal-to-noise ratios of EMCD spectra are often very low. We describe a simple set of rules, how to set up a geometry for a classical EMCD experiment on an arbitrary crystal structure to get a maximum dichroic signal. The procedure is based on an evaluation of the structure factor and extinction distances. Proof-of-concept simulations and experiments on a FeGe crystal present a successful test of these guidelines.
Involved external institutions
Leibniz-Institut für Festkörper- und Werkstoffforschung Dresden e.V. (IFW) / Leibniz Institute for Solid State and Materials Research Dresden
Germany (DE)
University of Wisconsin - Madison
United States (USA) (US)
Uppsala University
Sweden (SE)
Technische Universität Dresden
Germany (DE)
Germany (DE)
University of Wisconsin - Madison
United States (USA) (US)
Uppsala University
Sweden (SE)
Technische Universität Dresden
Germany (DE)
How to cite
APA:
Schneider, S., Negi, D., Stolt, M.J., Jin, S., Spiegelberg, J., Pohl, D.,... Rusz, J. (2018). Simple method for optimization of classical electron magnetic circular dichroism measurements: The role of structure factor and extinction distances. Physical Review Materials, 2(11). https://doi.org/10.1103/PhysRevMaterials.2.113801
MLA:
Schneider, Sebastian, et al. "Simple method for optimization of classical electron magnetic circular dichroism measurements: The role of structure factor and extinction distances." Physical Review Materials 2.11 (2018).
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