Simple method for optimization of classical electron magnetic circular dichroism measurements: The role of structure factor and extinction distances

Simple method for optimization of classical electron magnetic circular dichroism measurements : The role of structure factor and extinction distances

Schneider, Sebastian (author): IFW Dresden, Inst Metall Mat, Helmholtzstr 20, D-01069 Dresden, Germany;Tech Univ Dresden, Inst Festkorper & Mat Phys, D-01062 Dresden, Germany

Stolt, Matthew J. (author): Univ Wisconsin, Dept Chem, 1101 Univ Ave, Madison, WI 53706 USA

Jin, Song (author): Univ Wisconsin, Dept Chem, 1101 Univ Ave, Madison, WI 53706 USA

Pohl, Darius (author): IFW Dresden, Inst Metall Mat, Helmholtzstr 20, D-01069 Dresden, Germany;Tech Univ Dresden, Dresden Ctr Nanoanal, D-01062 Dresden, Germany

Rellinghaus, Bernd (author): IFW Dresden, Inst Metall Mat, Helmholtzstr 20, D-01069 Dresden, Germany;Tech Univ Dresden, Dresden Ctr Nanoanal, D-01062 Dresden, Germany

Goennenwein, Sebastian T. B. (author): Tech Univ Dresden, Inst Festkorper & Mat Phys, D-01062 Dresden, Germany;Tech Univ Dresden, Ctr Transport & Devices Emergent Mat, D-01062 Dresden, Germany

Nielsch, Kornelius (author): IFW Dresden, Inst Metall Mat, Helmholtzstr 20, D-01069 Dresden, Germany;Tech Univ Dresden, Inst Mat Sci, Hehnholtzstr 7, D-01069 Dresden, Germany

Rusz, Jan, 1979- (author): Uppsala universitet,Materialteori,IFW Dresden, Inst Metall Mat, Helmholtzstr 20, D-01069 Dresden, Germany

(creator_code:org_t)

Related links:: https://urn.kb.se/re...; show more...; https://doi.org/10.1...; show less...

Abstract Subject headings

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.

By the author/editor: Schneider, Sebas ...; Negi, Devendra S ...; Stolt, Matthew J ...; Jin, Song; Spiegelberg, Jak ...; Pohl, Darius; show more...; Rellinghaus, Ber ...; Goennenwein, Seb ...; Nielsch, Korneli ...; Rusz, Jan, 1979-; show less...

About the subject

NATURAL SCIENCES: NATURAL SCIENCES; and Physical Science ...; and Condensed Matter ...

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