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arxiv: cond-mat/9911415 · v1 · submitted 1999-11-25 · ❄️ cond-mat.mtrl-sci

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Magnetic circular dichroism in X-ray fluorescence of Heusler alloys at threshold excitation

M.V. Yablonskikh , A.V. Ezhov , V.I. Grebennikov , Yu.M. Yarmoshenko , E.Z. Kurmaev (address Institute of Metal Physics , Russian Academy of Sciences-Ural Division , Yekaterinburg , Russia) S.M. Butorin
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L.-C. Duda C. Sothe T. Kaambre M. Magnuson J. Nordgren (Physics Department Uppsala University Uppsala Sweden) S. Plogmann M. Neumann (Universitat Osnabruck Fachbereich Physik Osnabruck Germany)
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classification ❄️ cond-mat.mtrl-sci
keywords thresholdalloyscirculardichroismemissionexcitationfluorescenceheusler
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The results of fluorescence measurements of magnetic circular dichroism (MCD) in Mn L_2,L_3 X-ray emission and absorption for Heusler alloys NiMnSb and Co2MnSb are presented. Very intense resonance Mn L_3 emission is found at the Mn 2p_3/2 threshold and is attributed to a peculiarity of the threshold excitation in materials with the half-metallic character of the electronic structure. A theoretical model for the description of resonance scattering of polarized x-rays is suggested.

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