Photoemission study of valence fluctuation in YbCu/sub 2/
Journal Article
·
· Phys. Rev. B: Condens. Matter; (United States)
Mixed-valence YbCu/sub 2/ has been studied by x-ray and ultraviolet photoemission spectroscopy (XPS and UPS). UPS results reveal a bulk divalent (4f/sup 14/..-->..4f/sup 13/) peak --0.3 eV below the Fermi level, and a valence of 2.2 is deduced from XPS. These values are compared with the ground-state magnetic susceptibility, the specific heat, and the magnetic relaxation rate of 4f electrons by using the results of the degenerate impurity Anderson model. The 4f--5d--conduction-band hybridization is suggested to be more important than the 4f--sp--conduction-band hybridization.
- Research Organization:
- National Institute for Research in Inorganic Materials, Sakura-mura, Niihari-gun, Ibaraki 305, Japan
- OSTI ID:
- 6423861
- Journal Information:
- Phys. Rev. B: Condens. Matter; (United States), Journal Name: Phys. Rev. B: Condens. Matter; (United States) Vol. 35:17; ISSN PRBMD
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
36 MATERIALS SCIENCE
360104* -- Metals & Alloys-- Physical Properties
ALLOYS
COPPER ALLOYS
ELECTROMAGNETIC RADIATION
ELECTRON SPECTROSCOPY
ENERGY LEVELS
FERMI LEVEL
FLUCTUATIONS
GROUND STATES
HYBRIDIZATION
INTERMETALLIC COMPOUNDS
IONIZING RADIATIONS
MAGNETIC PROPERTIES
MAGNETIC SUSCEPTIBILITY
PHOTOELECTRON SPECTROSCOPY
PHYSICAL PROPERTIES
RADIATIONS
RARE EARTH ALLOYS
SPECIFIC HEAT
SPECTROSCOPY
THERMODYNAMIC PROPERTIES
ULTRAVIOLET RADIATION
VALENCE
VARIATIONS
X RADIATION
YTTERBIUM ALLOYS
360104* -- Metals & Alloys-- Physical Properties
ALLOYS
COPPER ALLOYS
ELECTROMAGNETIC RADIATION
ELECTRON SPECTROSCOPY
ENERGY LEVELS
FERMI LEVEL
FLUCTUATIONS
GROUND STATES
HYBRIDIZATION
INTERMETALLIC COMPOUNDS
IONIZING RADIATIONS
MAGNETIC PROPERTIES
MAGNETIC SUSCEPTIBILITY
PHOTOELECTRON SPECTROSCOPY
PHYSICAL PROPERTIES
RADIATIONS
RARE EARTH ALLOYS
SPECIFIC HEAT
SPECTROSCOPY
THERMODYNAMIC PROPERTIES
ULTRAVIOLET RADIATION
VALENCE
VARIATIONS
X RADIATION
YTTERBIUM ALLOYS