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.

17 pages, 7 figures accepted for publication in JPSJ

References in corpus (8)

• Fermi-liquid instabilities at magnetic quantum phase transitions
• Reversible Tuning of the Heavy Fermion Ground State in CeCoIn${}_5$
• Pressure Study of Quantum Criticality in CeCoIn5
• Fermi Surface Reconstruction in CeRh${}_{1-x}$Co${}_x$In${}_5$
• Thermoelectric response near a quantum critical point: the case of CeCoIn5
• Dimensional crossover of quantum critical behavior in CeCoIn${}_5$
• Anisotropic effect of Cd and Hg doping on Pauli limited superconductor CeCoIn${}_5$
• Thermodynamic quantum crtical behavior in the anisotropic Kondo necklace model

Cited by in corpus (4)

• Direct Evidence for a Magnetic f-electron Mediated Cooper Pairing Mechanism of Heavy Fermion Superconductivity in CeCoIn5
• Hall effect in heavy-fermion metals
• Theory of Scanning Tunneling Spectroscopy: from Kondo Impurities to Heavy Fermion Materials
• Quantum Phase Transition in $\mathrm{CeCoI}{\mathrm{n}}_5$: Experimental Facts and Theory