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Valence band ARPES study of La1-xSrxMnO3 single crystals

Författare:
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
Dokumenttyp: Konferensbidrag
Förlag: Elsevier Science B.V.

Sammanfattning

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.

Disputation

Nyckelord

  • Physics and Astronomy
  • manganites
  • angle-resolved photoemission
  • colossal magnetic resistance

Övriga

9th International Conference on Electronic Spectroscopy and Structure
30 June - 4 July 2003
Uppsala, Sweden
Published
Yes
  • ISSN: 0368-2048

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