Screened Anderson model

Journal Article · Wed May 01 00:00:00 EDT 1991 · Physical Review, B: Condensed Matter; (USA)

DOI:https://doi.org/10.1103/PhysRevB.43.10755· OSTI ID:5536252

Frota, H O ^[1]; Mahan, G D ^[2]

---

1. Department of Physics, The University of Tennessee, Knoxville, Tennessee 37996-1501 (USA)
2. Solid State Division, Oak Ridge National Laboratory, TN (USA) Department of Physics, The University of Tennessee, Knoxville, Tennessee 37996-1501 (USA)

The occupation number ({ital n}{sub {ital f}}) of the impurity orbital ({ital f}) in the Anderson model is calculated as a function of the orbital energy ({var epsilon}{sub {ital f}}), taking into account finite values for the Coulomb interactions between the impurity and the conduction electrons ({ital G}) and between two electrons inside of the localized orbital ({ital U}). For small values of {ital G}, the transitions {ital f}{sup 2}{r arrow}{ital f}{sup 1}{r arrow}{ital f}{sup 0} occur, with a step at {ital n}{sub {ital f}}=1. By increasing {ital G} this step vanishes, with a direct transition {ital f}{sup 2}{r arrow}{ital f}{sup 0}, which is a typical result of an effective {ital U}{lt}0.

• DOE Contract Number: AC05-84OR21400
• OSTI ID: 5536252
• Journal Information: Physical Review, B: Condensed Matter; (USA), Journal Name: Physical Review, B: Condensed Matter; (USA) Vol. 43:13; ISSN 0163-1829; ISSN PRBMD
• Country of Publication: United States
• Language: English

Related Subjects

656002* -- Condensed Matter Physics-- General Techniques in Condensed Matter-- (1987-)
75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
CHALCOGENIDES
COULOMB FIELD
ELECTRIC FIELDS
ENERGY LEVELS
F STATES
HYBRIDIZATION
IMPURITIES
OCCUPATION NUMBER
RARE EARTH COMPOUNDS
S STATES
SAMARIUM COMPOUNDS
SAMARIUM SELENIDES
SAMARIUM SULFIDES
SAMARIUM TELLURIDES
SCREENING
SELENIDES
SELENIUM COMPOUNDS
SULFIDES
SULFUR COMPOUNDS
TELLURIDES
TELLURIUM COMPOUNDS