Observation of Kondo resonance in YbAl/sub 3/

Journal Article · Mon Feb 15 04:00:00 EST 1988 · Phys. Rev. B: Condens. Matter; (United States)

DOI:https://doi.org/10.1103/PhysRevB.37.2861· OSTI ID:5485331

Oh, S; Suga, S; Kakizaki, A; Taniguchi, M; Ishii, T; Kang, J; Allen, J W; Gunnarsson, O; Christensen, N E; Fujimori, A; others, and

Anderson Hamiltonian parameters for mixed-valence YbAl/sub 3/ were determined from the magnetic susceptibility, photoelectron-spectroscopy, and bremsstrahlung-isochromat-spectroscopy data. The 4f/sup 13/..-->..4f/sup 14/ electron affinity energy is approx.0.5 eV and the hybridization between Yb 4f and Al conduction electrons is approx.0.05 eV, both of which are larger than conventional estimates. This hybridization and the resulting Kondo resonance are considered to play important roles for the anomalous properties of valence-fluctuating Yb compounds, as in the case of Ce compounds.

• Research Organization: Department of Physics, Seoul National University, Seoul 151, Korea
• OSTI ID: 5485331
• Journal Information: Phys. Rev. B: Condens. Matter; (United States), Journal Name: Phys. Rev. B: Condens. Matter; (United States) Vol. 37:6; ISSN PRBMD
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360104* -- Metals & Alloys-- Physical Properties
ALUMINIUM COMPOUNDS
BREMSSTRAHLUNG
CRYSTALS
ELECTROMAGNETIC RADIATION
ELECTRON SPECTROSCOPY
ELECTRONIC STRUCTURE
HAMILTONIANS
HYBRIDIZATION
KONDO EFFECT
MAGNETIC PROPERTIES
MAGNETIC SUSCEPTIBILITY
MATHEMATICAL OPERATORS
PHOTOELECTRON SPECTROSCOPY
PHYSICAL PROPERTIES
POLYCRYSTALS
QUANTUM OPERATORS
RADIATIONS
RARE EARTH COMPOUNDS
SPECTROSCOPY
YTTERBIUM COMPOUNDS