The electronic structure of the Co-doped indium tin oxide (ITO) diluted magnetic semiconductors (DMSs) were investigated\ntheoretically from first principles, using the fully relativistic Dirac linear muffin-tin orbital band structure method. The X-ray\nabsorption spectra (XAS) and X-ray magnetic circular dichroism (XMCD) spectra at the Co ??3, In??2, Sn??2, andO?? edges were\ninvestigated theoretically from first principles. The origin of the XMCD spectra in these compounds was examined.The calculated\nresults are compared with available experimental data.
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