Copper M sub II,III x-ray-emission spectra of copper oxides and the bismuth cuprate superconductor

Journal Article · Sun Nov 01 04:00:00 EST 1992 · Physical Review, B: Condensed Matter; (United States)

DOI:https://doi.org/10.1103/PhysRevB.46.11069· OSTI ID:7049900

Mueller, D R; Wallace, J; Ederer, D L ^[1]; Jia, J J; O'Brien, W L; Dong, Q Y; Callcott, T A ^[2]

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1. National Institute of Standards and Technology, Gaithersburg, Maryland 20899 (United States)
2. University of Tennessee, Knoxville, Tennessee 37996 (United States)

Photon-excited soft x-ray emission spectra for CuO, Cu{sub 2}O, and bismuth cuprate in the region of the Cu 3{ital d}{r arrow}3{ital p} transitions were measured to obtain bulk-sensitive electronic partial density-of-states information. For CuO and Cu{sub 2}O transitions from the valence levels into the {ital M}{sub II} and {ital M}{sub III} levels were clearly resolved. The emission features were separated by the 2.3-eV spin-orbit interaction of the copper 3{ital p}{sub 1/2} and 3{ital p}{sub 3/2} states and appeared in the statistical intensity ratio. The copper {ital M}{sub III} emission spectrum of the superconductor is broader than the spectra of CuO and Cu{sub 2}O. For all three compounds the shape of the {ital M}{sub III} emission spectrum extracted from the data is qualitatively similar to calculations of the copper single-particle local density of states. No evidence of multiplet structure was observed in the emission spectrum of CuO in spite of the open {ital d} shell in the ground state. The measurements are compared with published copper {ital L} emission data and photoemission results.

• DOE Contract Number: AC02-76CH00016
• OSTI ID: 7049900
• Journal Information: Physical Review, B: Condensed Matter; (United States), Journal Name: Physical Review, B: Condensed Matter; (United States) Vol. 46:17; ISSN PRBMD; ISSN 0163-1829
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360207* -- Ceramics
Cermets
& Refractories-- Superconducting Properties-- (1992-)
BISMUTH COMPOUNDS
BISMUTH OXIDES
CHALCOGENIDES
CHEMICAL ANALYSIS
COPPER
COPPER COMPOUNDS
COPPER OXIDES
D STATES
DATA
ELEMENTS
ENERGY LEVELS
EXPERIMENTAL DATA
HIGH-TC SUPERCONDUCTORS
INFORMATION
METALS
MINERALS
NONDESTRUCTIVE ANALYSIS
NUMERICAL DATA
OXIDE MINERALS
OXIDES
OXYGEN COMPOUNDS
P STATES
PEROVSKITE
PEROVSKITES
PHYSICAL PROPERTIES
SPECTRA
SUPERCONDUCTORS
THERMODYNAMIC PROPERTIES
TRANSITION ELEMENT COMPOUNDS
TRANSITION ELEMENTS
TRANSITION TEMPERATURE
VALENCE
X-RAY EMISSION ANALYSIS
X-RAY SPECTRA