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Proceedings Paper

Pulsed laser deposition for in-situ photoemission studies on YBa2Cu3O;7-δ and related oxide films
Author(s): T. Schmauder; B. Frazer; R. Gatt; Xiaoxing Xi; Marshall Onellion; Daniel Ariosa; M. Grioni; Giorgio Margaritondo; Davor Pavuna
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Paper Abstract

We describe a new pled laser deposition (PLD) system that is linked to an angle-resolved photoemission (ARPES) chamber at the Synchrotron Radiation Center (SRC) in Wisconsin, USA. We also discuss our first results on epitaxially grown YBa2Cu3O7-(delta ) (YBCO) films. The core level photoemission data indicate that a Ba-oxide layer is the dominant surface layer. We were not able to reproducibly detect a sharp fermi edge in the photoemission spectra and thus conclude that the surface layer is non-metallic, probably due to oxygen loss at the surface. The absence of screening of the Y and Ba core levels is a further argument for this conclusion. Further experiments with ozone treated film surfaces are currently under way.

Paper Details

Date Published: 22 December 1998
PDF: 8 pages
Proc. SPIE 3481, Superconducting and Related Oxides: Physics and Nanoengineering III, (22 December 1998); doi: 10.1117/12.335908
Show Author Affiliations
T. Schmauder, Univ. of Wisconsin/Madison and Ecole Polytechnique Federale de Lausanne (Switzerland)
B. Frazer, Univ. of Wisconsin/Madison (United States)
R. Gatt, Univ. of Wisconsin/Madison (United States)
Xiaoxing Xi, The Pennsylvania State Univ. (United States)
Marshall Onellion, Univ. of Wisconsin/Madison (United States)
Daniel Ariosa, Ecole Polytechnique Federale de Lausanne (Switzerland)
M. Grioni, Ecole Polytechnique Federale de Lausanne (Switzerland)
Giorgio Margaritondo, Ecole Polytechnique Federale de Lausanne (Switzerland)
Davor Pavuna, Ecole Polytechnique Federale de Lausanne (Switzerland)


Published in SPIE Proceedings Vol. 3481:
Superconducting and Related Oxides: Physics and Nanoengineering III
Davor Pavuna; Ivan Bozovic, Editor(s)

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