Kondo effect and spin-glass freezing of the magnetic impurities Cr, Mn, and Fe in superconducting palladium hydride
Through low-field ac susceptibility measurements we have determined the depression of the superconducting transition temperature T/sub c/ in palladium hydride (T/sub c/0 = 9.3 K) as a function of impurity concentration x for Cr, Mn, and Fe. For Cr and Fe similar values for the initial T/sub c/ depression were found, i.e., -150 K/at. % Cr and -145 K/at. % Fe. From resistivity experiments we are able to estimate the Kondo temperatures T/sub K/, i.e., T/sub K/approx. =10 K for Cr and T/sub K/approx. =5 K for Fe. Since i.e., T/sub K/approx. =10 K for Cr and T/sub K/approx. =5 K for Fe. Since systems exhibits an enhanced pair breaking as described by the theory of Mueller-Hartmann and Zittartz. In contrast, for Mn the initial T/sub c/ depression is -21 K/at. % and T/sub K/<
- Research Organization:
- Kamerlingh Onnes Laboratorium der Rijks-Universiteit, Leiden, The Netherlands
- OSTI ID:
- 5972991
- Journal Information:
- Phys. Rev. B: Condens. Matter; (United States), Vol. 24:9
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
PALLADIUM HYDRIDES
KONDO EFFECT
SPIN GLASS STATE
SUPERCONDUCTIVITY
ANTIFERROMAGNETISM
CHROMIUM ADDITIONS
CORRELATIONS
ELECTRIC CONDUCTIVITY
EXPERIMENTAL DATA
IMPURITIES
IRON ADDITIONS
MAGNETIC MATERIALS
MAGNETIC SUSCEPTIBILITY
MANGANESE ADDITIONS
TRANSITION TEMPERATURE
ALLOYS
CHROMIUM ALLOYS
DATA
ELECTRICAL PROPERTIES
HYDRIDES
HYDROGEN COMPOUNDS
INFORMATION
IRON ALLOYS
MAGNETIC PROPERTIES
MAGNETISM
MANGANESE ALLOYS
MATERIALS
NUMERICAL DATA
PALLADIUM COMPOUNDS
PHYSICAL PROPERTIES
THERMODYNAMIC PROPERTIES
TRANSITION ELEMENT COMPOUNDS
360204* - Ceramics
Cermets
& Refractories- Physical Properties
656101 - Solid State Physics- Superconductivity- General Theory- (-1987)