Photoemission study of monoclinic BaBiO sub 3

Journal Article · Sun Oct 01 00:00:00 EDT 1989 · Physical Review (Section) B: Condensed Matter; (USA)

DOI:https://doi.org/10.1103/PhysRevB.40.6912· OSTI ID:5490932

Shen, Z; Lindberg, P A.P.; Wells, B O; Dessau, D S; Borg, A; Lindau, I; Spicer, W E ^[1]; Ellis, W P; Kwei, G H; Ott, K C ^[2]; others, and

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1. Stanford Electronics Laboratories, Stanford University, Stanford, California 94305 (US)
2. Los Alamos National Laboratory, Los Alamos, New Mexico 87545

We present the results of photoemission studies of valence-disordered'' monoclinic BaBiO{sub 3} in the photon energy range 15--120 eV. The line shapes of the valence-band photoemission spectra and the Ba contributions to the valence band are similar to the line shapes of the total density of states and Ba partial density of states, respectively. The Bi 5{ital d} core levels show only one peak for each spin-orbit component. Oxygen resonance is observed, demonstrating the existence of empty O 2{ital p} states. These results support a more covalent rather than a simple ionic picture for the electronic states of BaBiO{sub 3}. Our data suggest that the charge fluctuation between the two unequal Bi sites is small. We also discuss the origin of the semiconducting character of the valence-disordered'' BaBiO{sub 3}.

• DOE Contract Number: AC03-82ER13000
• OSTI ID: 5490932
• Journal Information: Physical Review (Section) B: Condensed Matter; (USA), Journal Name: Physical Review (Section) B: Condensed Matter; (USA) Vol. 40:10; 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
BARIUM COMPOUNDS
BARIUM OXIDES
BISMUTH COMPOUNDS
BISMUTH OXIDES
BREMSSTRAHLUNG
CHALCOGENIDES
CRYSTAL LATTICES
CRYSTAL STRUCTURE
ELECTROMAGNETIC RADIATION
ELECTRON SPECTROSCOPY
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ELEMENTARY PARTICLES
ELEMENTS
ENERGY RANGE
ENERGY-LEVEL DENSITY
EV RANGE
EV RANGE 10-100
EV RANGE 100-1000
MASSLESS PARTICLES
MONOCLINIC LATTICES
NONMETALS
OXIDES
OXYGEN
OXYGEN COMPOUNDS
PHOTOELECTRON SPECTROSCOPY
PHOTONS
RADIATIONS
RESONANCE
SPECTROSCOPY
SYNCHROTRON RADIATION
ULTRAHIGH VACUUM
ULTRAVIOLET RADIATION