Photon-stimulated desorption of neutral O/sub 2/ from YBa/sub 2/Cu/sub 3/O/sub 7/. sqrt. /sub x/ by core-level excitation

Journal Article · Wed Jun 01 04:00:00 EDT 1988 · Phys. Rev. B: Condens. Matter; (United States)

DOI:https://doi.org/10.1103/PhysRevB.37.9852· OSTI ID:7248889

Rosenberg, R A; Wen, C

We report the first observations of synchrotron-radiation induced, photon-stimulated desorption (PSD) of a neutral molecule (O/sub 2/) from a surface by core-level excitation. The PSD yield of O/sub 2/ from YBa/sub 2/Cu/sub 3/O/sub 7/..sqrt../sub x/ was monitored as a function of photon energy in the range 60--140 eV; thresholds were observed corresponding to excitation of Cu(3p) and Ba(4d) core levels. Production of O/sub 2/ at the Cu(3p) edge involves excitation of shake-up or electron correlation states, while PSD at the Ba(4d) edge appears to involve excitation of localized B/sup 2 +/ states.

• Research Organization: Synchrotron Radiation Center, University of Wisconsin--Madison, 3731 Schneider Drive, Stoughton, Wisconsin 53589
• OSTI ID: 7248889
• Journal Information: Phys. Rev. B: Condens. Matter; (United States), Journal Name: Phys. Rev. B: Condens. Matter; (United States) Vol. 37:16; ISSN PRBMD
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360204* -- Ceramics
Cermets
& Refractories-- Physical Properties
656100 -- Condensed Matter Physics-- Superconductivity
75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
ALKALINE EARTH METAL COMPOUNDS
BARIUM COMPOUNDS
BARIUM OXIDES
BREMSSTRAHLUNG
CHALCOGENIDES
COLLISIONS
COPPER COMPOUNDS
COPPER OXIDES
CORRELATIONS
DESORPTION
ELECTROMAGNETIC RADIATION
ELEMENTS
ENERGY DEPENDENCE
ENERGY RANGE
EV RANGE
EV RANGE 10-100
EV RANGE 100-1000
NONMETALS
OXIDES
OXYGEN
OXYGEN COMPOUNDS
PHOTON COLLISIONS
QUANTITY RATIO
RADIATIONS
SORPTIVE PROPERTIES
SUPERCONDUCTORS
SURFACE PROPERTIES
SYNCHROTRON RADIATION
TRANSITION ELEMENT COMPOUNDS
YTTRIUM COMPOUNDS
YTTRIUM OXIDES