Doping and pressure studies on YbBiPt
- Los Alamos National Laboratory, Los Alamos, New Mexico 87545 (United States)
- Lawrence Berkeley Laboratory, and Department of Chemistry, University of California, Berkeley, California 94720 (United States)
- Eidgenossische Technische Hochschule Zurich, Zurich (Switzerland)
The compound YbBiPt exhibits an extremely large low-temperature [ital C]/[ital T] ([gamma][similar to]8 J K[sup [minus]2] mol[sup [minus]1]/Yb) which, if due solely to a renormalized effective mass, would make this material the heaviest correlated electron system known to date. In the Kondo model, the very large [gamma] corresponds to a small characteristic energy scale that is expected to be pressure dependent. We have studied the effect of chemical pressure on YbBiPt single crystals by heat-capacity measurements on Y and Lu-doped samples. We have also made preliminary low-temperature measurements under hydrostatic pressure of the heat capacity (300 mK[le][ital T][le]2 K, up to 8 kbar) and resistance (30 mK[le][ital T][le]1 K, at 16 kbar).
- DOE Contract Number:
- AC03-76SF00098
- OSTI ID:
- 6633474
- Journal Information:
- Journal of Applied Physics; (United States), Vol. 73:10; ISSN 0021-8979
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
BISMUTH COMPOUNDS
CRYSTAL DOPING
PLATINUM COMPOUNDS
YTTERBIUM COMPOUNDS
ELECTRIC CONDUCTIVITY
KONDO EFFECT
LUTETIUM ADDITIONS
PRESSURE EFFECTS
SPECIFIC HEAT
TEMPERATURE RANGE 0000-0013 K
YTTRIUM ADDITIONS
ALLOYS
ELECTRICAL PROPERTIES
LUTETIUM ALLOYS
PHYSICAL PROPERTIES
RARE EARTH ADDITIONS
RARE EARTH ALLOYS
RARE EARTH COMPOUNDS
TEMPERATURE RANGE
THERMODYNAMIC PROPERTIES
TRANSITION ELEMENT COMPOUNDS
YTTRIUM ALLOYS
360102* - Metals & Alloys- Structure & Phase Studies
360104 - Metals & Alloys- Physical Properties