Physics – Condensed Matter – Strongly Correlated Electrons
Scientific paper
2000-09-19
Physics
Condensed Matter
Strongly Correlated Electrons
This paper consists of 22 pages including 4 figures. This paper is submitted to Physical Review B
Scientific paper
10.1103/PhysRevB.63.155203
We have investigated 3d electronic states of doped transition metals in II-VI diluted magnetic semiconductors, Zn1-xMxSe (M = Mn, Fe, Co) and Zn1-xMnxY (Y = Se, Te), using the transition-metal L2,3-edge X-ray absorption spectroscopy (XAS) measurements. In order to explain the XAS spectra, we employed a tetragonal cluster model calculation, which includes not only the full ionic multiplet structure but also configuration interaction (CI). The results show that CI is essential to describe the experimental spectra adequately, indicating the strong hybridization between the transition metal 3d and the ligand p orbitals. In the study of Zn1-xMnxY (Y = Se, Te), we also found considerable spectral change in the Mn L2,3-edge XAS spectra for different ligands, confirming the importance of the hybridization effects in these materials.
Chen Chien-Tsu
Cho Kwanghyun
Han Moonsup
Jonker Berend T.
Kim Doris Yangsoo
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