XPS DOS studies of oxygen-plasma treated YBa sub 2 Cu sub 3 O sub 7 minus. delta. surfaces as a function of temperature

Conference · Wed Feb 01 00:00:00 EST 1989 · AIP Conference Proceedings (American Institute of Physics); (USA)

OSTI ID:6837179

Conard, T; Vohs, J M; Pireaux, J J; Caudano, R ^[1]

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1. Facultes Universitaires Notre-Dame de la Paix, Laboratoire LISE, rue de Bruxelles, 61, B-5000 NAMUR, Belgium (BE)

Monochromatized AlK{sub {alpha}} XPS has been used to monitor changes in the electronic structure of 123 sintered pellets as a function of temperature (90--650 K). Since 123 surfaces are known to lose oxygen and react with water, a novel procedure was used to prepare the material surface that would be representative of the bulk material. In contrast with published results, we observed drastic DOS modification (i.e. the appearance of a new peak close to the Fermi level at low temperature).

• OSTI ID: 6837179
• Report Number(s): CONF-881035-; CODEN: APCPC; TRN: 90-017469
• Journal Information: AIP Conference Proceedings (American Institute of Physics); (USA), Vol. 182:1; Conference: Topical conference on high- Tc superconducting thin films, devices, and characterization, Atlanta, GA (USA), 3 Oct 1988; ISSN 0094-243X
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
BARIUM OXIDES
ELECTRONIC STRUCTURE
PEROVSKITES
YTTRIUM OXIDES
BINDING ENERGY
COPPER IONS
EV RANGE 10-100
OXYGEN IONS
PELLETS
PHOTOELECTRON SPECTROSCOPY
SUPERCONDUCTORS
TEMPERATURE CONTROL
ALKALINE EARTH METAL COMPOUNDS
BARIUM COMPOUNDS
CHALCOGENIDES
CHARGED PARTICLES
CONTROL
ELECTRON SPECTROSCOPY
ENERGY
ENERGY RANGE
EV RANGE
IONS
OXIDES
OXYGEN COMPOUNDS
SPECTROSCOPY
TRANSITION ELEMENT COMPOUNDS
YTTRIUM COMPOUNDS
360204* - Ceramics
Cermets
& Refractories- Physical Properties