Photon-stimulated desorption of O/sub 2/ from YBa/sub 2/Cu/sub 3/O/sub 7-//sub x/
Journal Article
·
· Phys. Rev. B: Condens. Matter; (United States)
We report the first observations of synchrotron-radiation-induced photon-stimulated desorption (PSL) of molecular oxygen from the high-T/sub c/ superconductor YBa/sub 2/Cu/sub 3/O/sub 7-//sub x/. Using unmonochromatized synchrotron radiation we observe a time decay in the O/sub 2/ PSD yield which we interpret in terms of depletion of oxygen sites on or near the surface. The time dependence is best modeled by a sum of three exponentially decaying functions. The lifetimes range from values of <2 sec for the fastest component to 550 +- 250 sec for the slowest component. We derive a cross section for PSD of weakly bound oxygen of 3.5 +- 3 Mb.
- Research Organization:
- Synchrotron Radiation Center, University of Wisconsin--Madison, 3731 Schneider Drive, Stoughton, Wisconsin 53589
- OSTI ID:
- 5311370
- Journal Information:
- Phys. Rev. B: Condens. Matter; (United States), Journal Name: Phys. Rev. B: Condens. Matter; (United States) Vol. 37:10; ISSN PRBMD
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
36 MATERIALS SCIENCE
360204* -- Ceramics
Cermets
& Refractories-- Physical Properties
ALKALINE EARTH METAL COMPOUNDS
BARIUM COMPOUNDS
BARIUM OXIDES
BREMSSTRAHLUNG
CHALCOGENIDES
COLLISIONS
COPPER COMPOUNDS
COPPER OXIDES
CROSS SECTIONS
DESORPTION
ELECTROMAGNETIC RADIATION
ELEMENTS
NONMETALS
OXIDES
OXYGEN
OXYGEN COMPOUNDS
PHOTON COLLISIONS
RADIATIONS
SORPTIVE PROPERTIES
STOICHIOMETRY
SUPERCONDUCTORS
SURFACE PROPERTIES
SYNCHROTRON RADIATION
TIME DEPENDENCE
TRANSITION ELEMENT COMPOUNDS
YTTRIUM COMPOUNDS
YTTRIUM OXIDES
360204* -- Ceramics
Cermets
& Refractories-- Physical Properties
ALKALINE EARTH METAL COMPOUNDS
BARIUM COMPOUNDS
BARIUM OXIDES
BREMSSTRAHLUNG
CHALCOGENIDES
COLLISIONS
COPPER COMPOUNDS
COPPER OXIDES
CROSS SECTIONS
DESORPTION
ELECTROMAGNETIC RADIATION
ELEMENTS
NONMETALS
OXIDES
OXYGEN
OXYGEN COMPOUNDS
PHOTON COLLISIONS
RADIATIONS
SORPTIVE PROPERTIES
STOICHIOMETRY
SUPERCONDUCTORS
SURFACE PROPERTIES
SYNCHROTRON RADIATION
TIME DEPENDENCE
TRANSITION ELEMENT COMPOUNDS
YTTRIUM COMPOUNDS
YTTRIUM OXIDES