Abstract
The resonant behavior of anatase (101) and (001) surfaces has been investigated using synchrotron photoemission spectroscopy. The data are compared with earlier photoemission work from rutile and calculations for bulk anatase in order to elucidate the degree of Ti-O hybridization in the valence band. The results for the (101) surface show good general agreement with bulk band-structure calculations. Deviations from the bulk band structure in the case of the (001) surface are attributed to the reconstruction of this surface. A small peak is observed at around 1 eV binding energy (relative to the Fermi energy) for both surfaces following the creation of surface defects (O vacancies), which is thought to arise from surface The attenuation of this peak by gentle heating in is attributed to healing of the surface O vacancies.
- Received 15 July 2002
DOI:https://doi.org/10.1103/PhysRevB.67.035110
©2003 American Physical Society