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Understanding electron magnetic circular dichroism in a transition potential approach
Rhein Westfal TH Aachen, Cent Facil Electron Microscopy, D-52074 Aachen, Germany.;Forschungszentrum Julich, Ernst Ruska Ctr Microscopy & Spect Electrons, D-52425 Julich, Germany..
Rhein Westfal TH Aachen, Cent Facil Electron Microscopy, D-52074 Aachen, Germany.;Forschungszentrum Julich, Ernst Ruska Ctr Microscopy & Spect Electrons, D-52425 Julich, Germany..
Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics and Astronomy, Materials Theory.ORCID iD: 0000-0002-0074-1349
Beijing National Center for Electron Microscopy, Laboratory of Advanced Materials, The State Key Laboratory of New Ceramics and Fine Processing, and School of Materials Science and Engineering, Tsinghua University, Beijing 100084, China.; Central Facility for Electron Microscopy, RWTH Aachen University, 52074 Aachen, Germany.
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2018 (English)In: Physical Review B, ISSN 2469-9950, E-ISSN 2469-9969, Vol. 97, no 14, article id 144103Article in journal (Refereed) Published
Abstract [en]

This paper introduces an approach based on transition potentials for inelastic scattering to understand the underlying physics of electron magnetic circular dichroism (EMCD). The transition potentials are sufficiently localized to permit atomic-scale EMCD. Two-beam and three-beam systematic row cases are discussed in detail in terms of transition potentials for conventional transmission electron microscopy, and the basic symmetries which arise in the three-beam case are confirmed experimentally. Atomic-scale EMCD in scanning transmission electron microscopy (STEM), using both a standard STEM probe and vortex beams, is discussed.

Place, publisher, year, edition, pages
2018. Vol. 97, no 14, article id 144103
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Condensed Matter Physics
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URN: urn:nbn:se:uu:diva-351626DOI: 10.1103/PhysRevB.97.144103ISI: 000429208800005OAI: oai:DiVA.org:uu-351626DiVA, id: diva2:1217367
Available from: 2018-06-13 Created: 2018-06-13 Last updated: 2018-06-13Bibliographically approved

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