|About this Abstract
||2021 TMS Annual Meeting & Exhibition
||Thermal Property Characterization, Modeling, and Theory in Extreme Environments
||Non-magnetic Kondo effect in delta-UZr2
||Xiaxin Ding, Kaya Wei, Tiankai Yao, Ryan Baumbach, Krzysztof Gofryk
|On-Site Speaker (Planned)
Previously, we found an upturn of the electrical resistivity of UZr2 with a minimum at around 15 K and positive magnetoresistance . To understand the nature of this unusual behavior and the source of the additional scattering mechanism of the conduction electrons at low temperatures, we have performed detailed low-temperature transport studies (down to 0.1 K) of this material under applied magnetic fields (up to 9 T). We find that the temperature dependence of magnetoresistance is independent of magnetic fields as high as 9 T. This is in agreement with the orbital Kondo resonance effect that should be weakly influenced by the magnetic field. It is also established that a two-level system determines the low-temperature thermal properties of materials with the disorder and a similar anomalous term is observed in the low temperature dependence of heat capacity of this material.
 X. Ding et al., Phil. Mag. Lett. (under review)