Resonance Photoemission and Spin Polarization of FexCo1-xS2
Abstract
The electronic structure in the region of the Fe/Co 3d band for FexCo1-xS2 has been investigated by photoemission and spin polarized photoemission. The comparison between the results for different content of doped Fe was made, specifically x=0, 0.05, 0.10, 0.15 and 1. While the surface spin polarization of FexCo1-xS2, measured by spin polarized ultraviolet photoemission, was reduced compared with the bulk value, we see that the spin polarization increases with Fe doping level for textured thin films. The resonance photoemission spectroscopy shows that sulfur bands have strong resonance at the photon energy of the Co 2p core level, indicating strong hybridization between Co and sulfur bands in FexCo1-xS2 (small x) however, the ultraviolet photoelectron spectroscopy (UPS) of FeS2 exhibits a slightly different d-band density of states than FexCo1-xS2.
- Publication:
-
APS March Meeting Abstracts
- Pub Date:
- February 2012
- Bibcode:
- 2012APS..MAR.B5003Z