Valence band ARPES study of La1-xSrxMnO3 single crystals

Summary, in English

We have observed a feature at similar to2.5 eV binding energy (BE) in the valence band of La1-xSrxMnO3 single crystals not previously reported in the literature. The relative intensity of this feature decreases with increasing Sr concentration x and has a strong photon energy dependence. It also exhibits a complicated angle dependence. In this report we present a full set of angular-resolved photoemission spectra performed on (100) La1-xSrxMnO3 single crystals. The shape of the valence band has a strong dependence on emission and incident angles. In particular, at hupsilon = 130 eV the intensity of the 2.5 eV BE feature increases when the emission angle changes from 0 to 20degrees, and then sharply drops. The shape of the valence band changes with incident angle as well, and the feature is more pronounced at larger incident angles. A strong dependences on Sr doping as well as photon energy is also established. (C) 2004 Elsevier B.V. All rights reserved.

• Författare: LL Lev; MB Tsetlin; Mats Leandersson; AA Zakharov; MN Mikheeva; Ingolf Lindau; AM Balbashev
• Avdelning/ar: MAX IV-laboratoriet; Synkrotronljusfysik
• Publiceringsår: 2004
• Språk: Engelska
• Sidor: 499-503
• Publikation/Tidskrift/Serie: ICESS-9 Proceedings of the 9th International Conference on Electronic Spectroscopy and Structure (Journal of Electron Spectroscopy and Related Phenomena)
• Volym: 137-40
• Länkar: http://dx.doi.org/10.1016/j.elspec.2004.02.093
• Dokumenttyp: Konferensbidrag
• Förlag: Elsevier
• Ämne: Atom and Molecular Physics and Optics; Natural Sciences; Physical Sciences
• Nyckelord: manganites; angle-resolved photoemission; colossal magnetic resistance
• Conference name: 9th International Conference on Electronic Spectroscopy and Structure
• Conference date: 2003-06-30 - 2003-07-04
• Conference place: Uppsala, Sweden
• Status: Published
• ISBN/ISSN/Övrigt: ISSN: 0368-2048