Moderately heavy, heavy-fermion compound YbPd sub 2 Si sub 2 at low temperatures

Journal Article · Wed Jul 01 04:00:00 EDT 1992 · Physical Review, B: Condensed Matter; (United States)

DOI:https://doi.org/10.1103/PhysRevB.46.217· OSTI ID:5001528

Schlottmann, P ^[1]

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1. Department of Physics and Center for Materials Science and Technology, Florida State University, Tallahassee, Florida 32306 (United States)

The available experimental data on the specific heat, magnetic susceptibility, magnetization, valence, NMR Knight shift and relaxation rate, and the quadrupolar moment of YbPd{sub 2}Si{sub 2} are examined within the framework of the single-ion Anderson model. Such an analysis has previously given excellent agreement between theory and experiment for numerous other light heavy-fermion compounds, where crystalline fields do not play a dominant role. For YbPd{sub 2}Si{sub 2}, substantial crystalline-field splittings make difficult a quantitative comparison with existing exact solutions of the Anderson model. Inconsistencies with the interpretation that a nearly degenerate ground quadruplet determines the low-temperature thermodynamics are pointed out. It is concluded that at least three of the four Kramers doublets participate in the low-{ital T} properties. These three doublets should have a splitting of the order of the Kondo temperature, i.e., about 100 K. A simple resonant-level model parametrizing the NMR relaxation rate at low {ital T} is presented. Finally, hydrostatic-pressure experiments are suggested to study the nature of the faint, ordered phase at very low temperatures.

• DOE Contract Number: FG05-91ER45443
• OSTI ID: 5001528
• Journal Information: Physical Review, B: Condensed Matter; (United States), Journal Name: Physical Review, B: Condensed Matter; (United States) Vol. 46:1; ISSN 0163-1829; ISSN PRBMD
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360204* -- Ceramics
Cermets
& Refractories-- Physical Properties
DATA ANALYSIS
ELECTRONIC STRUCTURE
KNIGHT SHIFT
MAGNETIC PROPERTIES
MAGNETIC RESONANCE
MAGNETIC SUSCEPTIBILITY
NUCLEAR MAGNETIC RESONANCE
PALLADIUM COMPOUNDS
PALLADIUM SILICIDES
PHYSICAL PROPERTIES
QUADRUPOLE MOMENTS
RARE EARTH COMPOUNDS
RESONANCE
SILICIDES
SILICON COMPOUNDS
SPECIFIC HEAT
TEMPERATURE RANGE
TEMPERATURE RANGE 0065-0273 K
THERMODYNAMIC PROPERTIES
TRANSITION ELEMENT COMPOUNDS
VALENCE
YTTERBIUM COMPOUNDS
YTTERBIUM SILICIDES