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Photoemission spectromicroscopy study of a Bi2Sr2CaCu2O8+delta single crystal

Författare:
Publiceringsår: 2003
Språk: Engelska
Sidor: 487-490
Publikation/Tidskrift/Serie: Journal de Physique IV - Proceedings
Volym: 104
Dokumenttyp: Konferensbidrag
Förlag: EDP Sciences

Sammanfattning

Using photoemission spectromicroscopy at sub-micron lateral resolution we studied two superconductor systems of high fundamental and practical importance, such as Bi2Sr2CaCu2O8+delta and MgB2. Our findings demonstrate the importance of considering, for this class of systems, the possible presence of spatial inhomogeneities in interpreting the results of conventional photoemission experiments, which typically probe an area of the order of 1 mm(2). In particular, in the case of MgB2, we report a measured density of states directly comparable to the theoretical predictions, thus rejecting the claim for the existence of strong correlation effects proposed by previous spatially averaged measurements.

Disputation

Nyckelord

  • Physics and Astronomy

Övrigt

7th International Conference on X-Ray Microscopy
July 28 - August 2, 2002
ESRF, Grenoble, France
Published
Yes
  • ISSN: 1155-4339

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