Pulsed laser deposition for in-situ photoemission studies on YBa2Cu3O7-delta and related oxide films
We describe a new pulsed 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 Be-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.
Univ Wisconsin, Dept Phys, Madison, WI 53706 USA.Schmauder, T, Univ Wisconsin, Dept Phys, 1150 Univ Ave, Madison, WI 53706 USA.
ISI Document Delivery No.: BM36V
Cited Reference Count: 6
3rd Conference on Oxide Superconductor Physics and Nanoengineering
JUL 20-24, 1998
SAN DIEGO, CALIFORNIA
SPIE Int Soc Opt Engn, Oxxel GmbH Bremen
PO BOX 10, BELLINGHAM, WA 98227-0010 USA
Record created on 2006-10-03, modified on 2016-08-08