A spin-selective and polarization dependent study at the K absorption pre-edge in hematite -Fe2O3 was performed by means of 1s3p resonant x-ray emission spectroscopy on a single crystal. The experimental results can be modeled using a band structure approach local density approximation LDA U. The spin-selective spectra in connection with the calculations firmly establish metal-oxygen and metal-metal orbital hybridizations. A phase shift in the polarization dependent absorption cross section is observed between the first two absorption features showing directionality in the orbital hybridization.
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Titolo: | Orbital hybridization and spin polarization in the resonant 1s photoexcitations of a-Fe2O3 |
Autori: | |
Data di pubblicazione: | 2008 |
Rivista: | |
Abstract: | A spin-selective and polarization dependent study at the K absorption pre-edge in hematite -Fe2O3 was performed by means of 1s3p resonant x-ray emission spectroscopy on a single crystal. The experimental results can be modeled using a band structure approach local density approximation LDA U. The spin-selective spectra in connection with the calculations firmly establish metal-oxygen and metal-metal orbital hybridizations. A phase shift in the polarization dependent absorption cross section is observed between the first two absorption features showing directionality in the orbital hybridization. |
Handle: | http://hdl.handle.net/11581/114403 |
Appare nelle tipologie: | Articolo |