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Valence band ARPES study of La1-xSrxMnO3 single crystals

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Author

  • LL Lev
  • MB Tsetlin
  • Mats Leandersson
  • AA Zakharov
  • MN Mikheeva
  • Ingolf Lindau
  • AM Balbashev

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.

Publishing year

2004

Language

English

Pages

499-503

Publication/Series

ICESS-9 Proceedings of the 9th International Conference on Electronic Spectroscopy and Structure (Journal of Electron Spectroscopy and Related Phenomena)

Volume

137-40

Document type

Conference paper

Publisher

Elsevier

Topic

  • Atom and Molecular Physics and Optics
  • Natural Sciences
  • Physical Sciences

Keywords

  • 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/Other

  • ISSN: 0368-2048