An Analysis of Zn and Se K Edge XANES Spectra for ZnMeSe (Me = Ni, Cr, V and Ti)

Kisiel, A.; Czarnecka-Such, E.; Lee, P.M.; Burattini, E.; Giriat, W.

doi:10.1051/jp4:19972192

Cited by 1 publication

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“…The theoretical LMTO calculations of the p-like DOS contribution of the Fe d states in Zn 0.5 Fe 0.5 Se indicate p-like states localized at about 0.6 eV above the Fermi level [49].…”

Section: Exchangementioning

confidence: 91%

“…Therefore, the contribution of Co 2+ occupied states to the VB should be significant, but the hybridization of unoccupied Co 2+ 3d states with the CB should be weaker. XANES analysis and LMTO calculations [49] suggest that the contribution of the Co 3d empty states to the p-like CB DOS is situated close to the CBM, i.e. about 0.5 eV below the CBM of the host crystal and 0.37 eV above the Fermi energy, respectively.…”

Section: Zn 1−x Co X Sementioning

confidence: 93%

“…According to the above analysis, it is easy to ascertain that the t 2 spin-up electrons of Fe 2+ interact strongly with the upper part of the VB of the ZnSe host crystal. Creation by the sixth spin-down electron of the deep donor state in the forbidden energy gap and the ∼25% smaller spin-up-spin-down interaction splitting in Fe 2+ [40,44,48,49] (see also table 1) makes the influence of unoccupied Fe states on the CBs weaker. This can be seen on comparing ZnMnSe and ZnFeSe reflectivity spectra (10% Mn and Fe compositions).…”

Section: Exchangementioning

confidence: 99%

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The influence of transition metals on the electronic structure of ZnSe host crystal: fundamental reflectivity analysis

Kisiel

Piacentini

Dębowska

et al. 1997

J. Phys.: Condens. Matter

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The optical properties of the semiconducting compounds (Me = Ti, V, Cr, Mn, Fe, Co, and Ni) crystallizing in the zinc-blende structure have been investigated. Reflectivity spectra of these materials have been taken at room and liquid nitrogen temperatures. The measurements have been performed in the 4 - 25 eV energy range using synchrotron radiation from the ADONE storage ring in Frascati. Comparisons between the reflectivity spectra of the ternary systems and those of the host crystal ZnSe have been made, and models explaining the influence of the transition metal ions on the electronic structure of the host crystal ZnSe have been discussed.

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“…The theoretical LMTO calculations of the p-like DOS contribution of the Fe d states in Zn 0.5 Fe 0.5 Se indicate p-like states localized at about 0.6 eV above the Fermi level [49].…”

Section: Exchangementioning

confidence: 91%

Section: Zn 1−x Co X Sementioning

confidence: 93%