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In-Situ Surface Observation of C-Axis Oriented YBa2Cu3O7−x Thin Films by Leed, XPS and ISS

Published online by Cambridge University Press:  26 February 2011

S. Tanaka
Affiliation:
Sumitomo Electric Industries, LTD., Information & Electronics Laboratories, 1–1–3, Shimaya, Konohana-ku, Osaka 554, Japan
T. Nakamura
Affiliation:
Sumitomo Electric Industries, LTD., Information & Electronics Laboratories, 1–1–3, Shimaya, Konohana-ku, Osaka 554, Japan
H. Tokuda
Affiliation:
Sumitomo Electric Industries, LTD., Information & Electronics Laboratories, 1–1–3, Shimaya, Konohana-ku, Osaka 554, Japan
M. Iiyama
Affiliation:
Sumitomo Electric Industries, LTD., Information & Electronics Laboratories, 1–1–3, Shimaya, Konohana-ku, Osaka 554, Japan
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1. abstract

In an ultra-high vacuum equipment, YBa2CU3O7−x (YBCO) thin films were deposited by the ozone-assisted co-evaporation method and their surfaces were investigated by LEED, XPS and ISS without breaking the vacuum. A LEED pattern was observed for the first time at an as-deposited surface. A clean, crystalline and superconducting surface was preserved to the top of the film. Only Cu atoms were detected at the first monolayer by ISS, suggesting that clean surfaces are stabilized by Cu-O layers.

Type
Research Article
Copyright
Copyright © Materials Research Society 1992

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