Behavior of the Quantum Critical Point and the Fermi-liquid Domain in the Heavy Fermion Superconductor CeCoIn5 studied by resistivity

Abstract

We report detailed very low temperature resistivity measurements on the heavy fermion compounds Ce_{1-x}La_{x}CoIn5 (x=0 and x=0.01), with current applied in two crystallographic directions [100] (basal plane) and [001] (perpendicular to the basal plane) under magnetic field applied in the [001] or [011] direction. We found a Fermi liquid (ρ\propto T^{2}) ground state, in all cases, for fields above the superconducting upper critical field. We discuss the possible location of a field induced quantum critical point with respect to Hc2(0), and compare our measurements with the previous reports in order to give a clear picture of the experimental status on this long debated issue.

arXiv comment17 pages, 7 figures accepted for publication in JPSJ

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Cited by in corpus (12)

• Direct Evidence for a Magnetic f-electron Mediated Cooper Pairing Mechanism of Heavy Fermion Superconductivity in CeCoIn5
• Antiferromagnetism and Superconductivity in Cerium based Heavy Fermion Compounds
• Hall effect in heavy-fermion metals
• Theory of Scanning Tunneling Spectroscopy: from Kondo Impurities to Heavy Fermion Materials
• Evidence for Coexistence of Bulk Superconductivity and Itinerant Antiferromagnetism in the Heavy Fermion System CeCo(In${}_{1-x}$Cd${}_x$)${}_5$
• Anomalous change in the de Haas-van Alphen oscillations of CeCoIn${}_5$ at ultra-low temperatures
• Upper critical field of CeCoIn5
• Interplay of Superconductivity, Antiferromagnetism, and Pauli Depairing in CeCoIn${}_5$
• Differential Conductance and Defect States in the Heavy Fermion Superconductor CeCoIn${}_5$
• Evolution of the spin resonance of CeCoIn${}_5$ as a function of magnetic field and La substitution
• Ultralow temperature NMR of CeCoIn${}_5$
• Quantum Phase Transition in $\mathrm{CeCoI}{\mathrm{n}}_5$: Experimental Facts and Theory