Photoemission study of the electronic structure of LaFeAsO 1-xFx and LaFePO1-xFx
We have performed a photoemission spectroscopy study of the newly discovered iron-based superconductors LaFeAsO1-xFx and LaFePO1-xFx. The valence-band spectra show a narrow Fe 3d-derived band near EF indicating the itinerant character of the Fe 3d states. In going from the undoped to F-doped compoun...
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| Other Authors: | , , , , , , , , |
| Format: | article |
| Published: |
2008
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| Online Access: | http://hdl.handle.net/10725/16624 https://doi.org/10.1143/JPSJS.77SC.69 http://libraries.lau.edu.lb/research/laur/terms-of-use/articles.php https://journals.jps.jp/doi/10.1143/JPSJS.77SC.69 |
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| Summary: | We have performed a photoemission spectroscopy study of the newly discovered iron-based superconductors LaFeAsO1-xFx and LaFePO1-xFx. The valence-band spectra show a narrow Fe 3d-derived band near EF indicating the itinerant character of the Fe 3d states. In going from the undoped to F-doped compounds, all the spectra are found to shift to higher binding energies, consistent with electron doping within the rigid-band model. Also, in going from LaFeAsO1-xF x to LaFePO1-xFx, the near-EF intensity increases reflecting the weakening of electron correlation. |
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