In situ photoelectron spectroscopy of LaMnO3 and La0.6Sr0.4MnO3 thin films grown by laser molecular beam expitaxy
| Autor: | Hideomi Koinuma, N Nakagawa, Masaharu Oshima, Daisuke Kobayashi, Hiroshi Kumigashira, K. Ono, H. Ohguchi, M. Lippmaa, Masashi Kawasaki, K. Horiba |
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| Rok vydání: | 2004 |
| Předmět: |
Radiation
Materials science Analytical chemistry Condensed Matter Physics Epitaxy Electron spectroscopy Atomic and Molecular Physics and Optics Electronic Optical and Magnetic Materials Condensed Matter::Materials Science X-ray photoelectron spectroscopy Condensed Matter::Superconductivity Condensed Matter::Strongly Correlated Electrons Physics::Atomic Physics Physical and Theoretical Chemistry Thin film Spectroscopy Electronic band structure Molecular beam Molecular beam epitaxy |
| Zdroj: | Journal of Electron Spectroscopy and Related Phenomena. :145-149 |
| ISSN: | 0368-2048 |
| DOI: | 10.1016/j.elspec.2004.02.111 |
| Popis: | We have constructed a high-resolution photoelectron spectroscopy system combined with a laser molecular beam epitaxy (laser-MBE) chamber and have characterized composition-controlled La1−xSrxMnO3 (LSMO) thin films. The importance of atomically flat surfaces by in situ photoelectron spectroscopy for revealing the intrinsic electronic structures has been demonstrated by comparing O1s, O2s and valence band spectra from the laser-MBE-grown LaMnO3 and LSMO films with those from the scraped samples. Even for the laser-MBE-grown LSMO films, core levels and band structure exhibit strong dependence on surface morphology. For atomically flat LSMO films, we have also elucidated the hole-doping features into Mn3d eg band by substituting La with Sr by resonant photoelectron spectra. |
| Databáze: | OpenAIRE |
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