Phys. Rev. B 63, 235117 (2001) [10 pages]Origin of magnetic circular dichroism in soft x-ray fluorescence of Heusler alloys at threshold excitationReceived 22 February 2000; revised 4 October 2000; published 1 June 2001 The results of investigations of the Heusler alloys NiMnSb and Co2MnSb by magnetic circular dichroism in soft x-ray emission spectroscopy (SXEMCD) are presented. The data obtained are in a good agreement with theoretical calculations of x-ray emission. A very intense resonant inelastic peak in the Mn L3 spectra in the region of states above the nominal Fermi level was observed and attributed to x-ray reemission. The interplay between the theoretically predicted half-metallic character of the Mn 3d valence band and the Mn L2,L3 SXEMCD spectra is discussed. © 2001 The American Physical Society URL:
http://link.aps.org/doi/10.1103/PhysRevB.63.235117
DOI:
10.1103/PhysRevB.63.235117
PACS:
78.70.En, 75.25.+z, 75.20.Hr, 87.64.Ni
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