Title

Initial stages of degradation of superconductor surfaces: O2, H2O, CO2, and CO chemisorption on La2-xSrxCuO4

Document Type

Article

Publication Date

1-1-1988

Abstract

The initial stages of degradation of high-Tc superconductor surfaces by interaction with atmospheric gases have been studied using ultraviolet photoelectron spectroscopy. O2 has little effect, while H2O adsorbs dissociatively with an initial sticking coefficient S01, and form a surface hydroxide. CO2 adsorbs forming a carbonatelike surface species with an initial sticking coefficient of 0.3. CO is observed to result in similar adsorbed surface species with a much lower sticking coefficient of 3×10-4. © 1988 The American Physical Society.

Publication Source (Journal or Book title)

Physical Review B

First Page

7936

Last Page

7939

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