Ba core-level shift in x-ray photoemission spectroscopy on single-phase Y sub 1 minus x Pr sub x Ba sub 2 Cu sub 3 O sub 7 and YBa sub 2 Cu sub 3 O sub 7 minus y compounds

Journal Article · Tue May 01 04:00:00 EDT 1990 · Physical Review, B: Condensed Matter; (USA)

DOI:https://doi.org/10.1103/PhysRevB.41.8921· OSTI ID:6883897

Yang, I; Schrott, A G; Tsuei, C C ^[1]

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1. IBM Research Division, Thomas J. Watson Research Center, P.O. Box 218, Yorktown Heights, New York 10598 (USA)

We have measured x-ray photoemission spectra of single-phase Y{sub 1{minus}{ital x}}Pr{sub {ital x}}Ba{sub 2}Cu{sub 3}O{sub 7} ({ital x}=0.0, 0.2, 0.4, 0.6, 0.8) and of YBa{sub 2}Cu{sub 3}O{sub 7{minus}{ital y}} ({ital y}=0.0, 0.15, 0.40) compounds, in which superconductivity is suppressed by increasing {ital x} and {ital y}. Ba 3{ital d} and Ba 4{ital d} core-level spectra were observed to shift significantly towards higher binding energy as {ital x} and {ital y} increase, while Y 3{ital d}, Cu 3{ital p}, O 1{ital s} spectra were not. The shift of Ba core-level spectra is interpreted as resulting from a distinct initial-state Ba 5{ital d}--O{ital d} 2{ital p} covalency common to 1:2:3 structures, as opposed to final-state effects. This energy shift may constitute a sensitive fingerprint of the degree of hole localization at Ba sites, which is related to the quenching of superconductivity in these compounds.

• OSTI ID: 6883897
• Journal Information: Physical Review, B: Condensed Matter; (USA), Journal Name: Physical Review, B: Condensed Matter; (USA) Vol. 41:13; ISSN PRBMD; ISSN 0163-1829
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360204* -- Ceramics
Cermets
& Refractories-- Physical Properties
ALKALINE EARTH METAL COMPOUNDS
ALKALINE EARTH METALS
BARIUM
BARIUM COMPOUNDS
BARIUM OXIDES
BINDING ENERGY
CHALCOGENIDES
COPPER COMPOUNDS
COPPER OXIDES
D STATES
ELECTRIC CONDUCTIVITY
ELECTRICAL PROPERTIES
ELECTROMAGNETIC RADIATION
ELECTRON SPECTROSCOPY
ELEMENTS
ENERGY
ENERGY LEVELS
HOLES
IONIZING RADIATIONS
METALS
OXIDES
OXYGEN COMPOUNDS
PHOTOELECTRON SPECTROSCOPY
PHYSICAL PROPERTIES
PRASEODYMIUM COMPOUNDS
PRASEODYMIUM OXIDES
QUENCHING
RADIATIONS
RARE EARTH COMPOUNDS
SPECTRAL SHIFT
SPECTROSCOPY
SUPERCONDUCTIVITY
SUPERCONDUCTORS
TRANSITION ELEMENT COMPOUNDS
TYPE-II SUPERCONDUCTORS
X RADIATION
YTTRIUM COMPOUNDS
YTTRIUM OXIDES