ARPES in strongly correlated 4f and 5f systems: Comparison to the Periodic Anderson Model

Conference · Mon Dec 01 04:00:00 EST 1997

OSTI ID:555574

Arko, A J; Joyce, J J; Cox, L E ^[1]

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1. and others

The electronic structure of both Ce and U heavy fermions appears to consist of extremely narrow, nearly temperature independent bands (i.e., no spectral weight loss or transfer with temperature). A small dispersion of the f-bands above the Kondo temperature is easily measurable so that a Kondo resonance, as defined by NCA, is not evident. Preliminary results, however, indicate that the Periodic Anderson Model captures some of the essential physics. Angle-integrated resonant photoemission results on {delta}-Pu indicate a narrow 5f feature at E{sub F}, similar in width to f-states in Ce and U compounds, but differing in that cross-section behavior of the near-E{sub F} feature suggests substantial 6D admixture.

• Research Organization: Los Alamos National Lab., NM (United States)
• Sponsoring Organization: USDOE Office of Energy Research, Washington, DC (United States)
• DOE Contract Number: W-7405-ENG-36
• OSTI ID: 555574
• Report Number(s): LA-UR--97-3670; CONF-970907--; ON: DE98001471
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
ANTIMONY ALLOYS
BERYLLIUM ALLOYS
BINDING ENERGY
CERIUM ALLOYS
CRYSTAL LATTICES
CRYSTAL STRUCTURE
ELECTRONIC STRUCTURE
KONDO EFFECT
PLATINUM ALLOYS
URANIUM ALLOYS