Abstract
We have performed in situ photoemission and O 1s X-ray absorption studies of La1-xSrxFeO3 (0≤x≤0.67) epitaxial thin films grown by laser molecular beam epitaxy. We found that hole doping induces spectral weight transfer from below the Fermi level to above it across the gap in a highly non-rigid-band-like manner. We also observed the temperature dependence on the spectra of the x=0.67 sample, which shows a charge disproportionation at 190 K. With decreasing temperature, we observed gradual changes of the spectra with spectral weight transfer primarily within the e g band.
Original language | English |
---|---|
Pages (from-to) | 877-880 |
Number of pages | 4 |
Journal | Journal of Electron Spectroscopy and Related Phenomena |
Volume | 144-147 |
DOIs | |
Publication status | Published - 2005 Jun |
Externally published | Yes |
Keywords
- LaSrFeO
- Laser MBE
- Photoemission spectroscopy
- Thin films
ASJC Scopus subject areas
- Electronic, Optical and Magnetic Materials
- Radiation
- Atomic and Molecular Physics, and Optics
- Condensed Matter Physics
- Spectroscopy
- Physical and Theoretical Chemistry