Single-ion scaling and unconventional Kondo behavior in the electrical resistivity of the U{sub 1-x}Th{sub x}Pd{sub 2}Al{sub 3} system
Journal Article
·
· Physical Review. B, Condensed Matter and Materials Physics
- Department of Physics and Institute for Pure and Applied Physical Sciences, University of California, San Diego, La Jolla, California 92093 (United States)
We report measurements of the temperature T dependence of the electrical resistivity {rho} of the U{sub 1-x}Th{sub x}Pd{sub 2}Al{sub 3} system for thorium concentrations 0.6{<=}x{<=}1.0 in the temperature range 0.02 K{<=}T{<=}300 K. These measurements reveal an unconventional Kondo effect with an effective Kondo temperature T{sub K}{approx_equal}20 K, which is independent of thorium concentration. The {rho}(T) data below T{sub K} scale with U concentration (1-x) and T{sub K} in agreement with the scaling of C(T) and {chi}(T) at low temperature that was previously established. Analysis of the data below 20 K indicates that the electrical resistivity in the non-Fermi-liquid regime saturates as a power law at the lowest temperatures with the form {rho}(T){approx}1-a(T/T{sub K}){sup n} with n{approx}1.5. (c) 2000 The American Physical Society.
- OSTI ID:
- 20217233
- Journal Information:
- Physical Review. B, Condensed Matter and Materials Physics, Journal Name: Physical Review. B, Condensed Matter and Materials Physics Journal Issue: 6 Vol. 62; ISSN 1098-0121
- Country of Publication:
- United States
- Language:
- English
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