Volume dependence of Anderson hybridization in cubic CeCd and CeAg

Journal Article · Sat May 15 00:00:00 EDT 1993 · Journal of Applied Physics; (United States)

DOI:https://doi.org/10.1063/1.352537· OSTI ID:6678837

Monachesi, P ^[1]; Andreani, L C ^[2]; Continenza, A ^[1]; McMahan, A K ^[3]

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1. Dipartimento di Fisica, Universita dell'Aquila, 67100-L'Aquila (Italy)
2. IRRMA, PHB-Ecublens, 1015 Lausanne (Switzerland)
3. Lawrence Livermore National Laboratory, University of California, California 94550 (United States)

We have undertaken a first-principles theoretical study of the Anderson hybridization in cubic CeCd and CeAg as a function of volume reduction. We present results for the hybridization width [Delta]([epsilon]) in both the [ital J]=5/2 multiplet and in the [Gamma][sub 8], [Gamma][sub 7] crystal field states of the [ital f][sup 1] Ce configuration. We also calculate the hybridization contribution to the magnetic transition temperature. This is found to increase with pressure but is smaller than the experimental values, indicating that the Coulomb exchange contribution to the magnetic coupling is not negligible in these compounds.

• DOE Contract Number: W-7405-ENG-48
• OSTI ID: 6678837
• Journal Information: Journal of Applied Physics; (United States), Vol. 73:10; ISSN 0021-8979
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
CADMIUM COMPOUNDS
ELECTRONIC STRUCTURE
CERIUM COMPOUNDS
SILVER COMPOUNDS
BINARY MIXTURES
CRYSTAL FIELD
EXCHANGE INTERACTIONS
HYBRIDIZATION
KONDO EFFECT
PRESSURE EFFECTS
DISPERSIONS
INTERACTIONS
MIXTURES
RARE EARTH COMPOUNDS
TRANSITION ELEMENT COMPOUNDS
360104* - Metals & Alloys- Physical Properties