Quantum Criticality of an Itinerant Ferromagnetic Compound URhAl Studied by Resistivity Measurements under High Pressure

International Conference on Strongly Correlated Electron Systems 2014

Shimizu, Yusei^1,3 ; Braithwaite, Daniel^1 ; Salce, Bernard^1 ; Combier, Tristan^1 ; Aoki, Dai^1,2 ; Hering, Eduardo N.^1 ; Ramos, Scheilla M.^1 ; Flouquet, Jacques^1

University Grenoble Alpes, INAC-SPSMS, CEA, Grenoble

F-38000, France^1

Institute for Materials Research, Tohoku University, Oarai

311-1313, Japan^2

Institute for Solid State Physics, University of Tokyo, Kashiwa

277-8581, Japan^3

关键词: A-coefficient;    Critical pressures;    Ferromagnetic compounds;    High pressure;    Non-Fermi-liquid behavior;    Quantum criticality;    Resistivity measurement;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/592/1/012088/pdf
DOI  :  10.1088/1742-6596/592/1/012088

来源: IOP

【 摘 要 】

We performed resistivity measurements under high pressure for an itinerant Ising- type ferromagnetic compound URhAl in order to investigate the quantum criticality in this compound. We found that the Curie temperature is suppressed with increasing pressure, and URhAl has the critical pressure of ∼ 5.2 GPa. We also observed a non-Fermi-liquid behavior as well as a large enhancement of A-coefficient of resistivity (ρ(T) ρ0+ AT2) near the critical pressure.