Total electron yield XANES of zinc-blende MnTe
作者： R.J. Iwanowski , E. Welter , E. Janik
DOI: 10.1016/J.APSUSC.2008.05.270
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摘要: Abstract The electronic structure and chemical bond of zinc-blende (zb) MnTe have been studied by using total-electron-yield (TEY) X-ray absorption near-edge (XANES) spectroscopy. Close resemblances the shape Mn K-edge XANES in zb-MnTe Zn1−xMnxTe [A. Titov, X. Biquard, D. Halley, S. Kuroda, E. Bellet-Amalric, H. Mariette, J. Cibert, A.E. Merad, G. M.B. Kanoun, Kulatov, Yu.A. Uspenskii, Phys. Rev. B 72 (2005) 115209] indicated predominant influence 1st coordination shell. In particular, identical single-peak pre-edge for both cases was mainly ascribed to 1s-3d/4p weakly allowed dipole transitions. quantitative analysis concerned observed shift threshold energy a magnitude relevant cation–anion charge transfer (or effective cation charge), q(Mn–Te) [calculated after M. Kitamura, Chen, Chem. Solids 52 (1991) 731]. It also provided comparison with our earlier studies Zn1−xMnxB alloys (B = S, Se). estimated within enabled us complete q(Mn–B) versus chalcogen ligand Se, Te) dependence interpret it terms p-d hybridization contribution 3d electrons overall transfer.
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