Nonvanishing Energy Scales at the Quantum Critical Point of CeCoIn5

Abstract

Heat and charge transport were used to probe the magnetic field-tuned quantum critical point in the heavy-fermion metal CeCoIn${}_5$. A comparison of electrical and thermal resistivities reveals three characteristic energy scales. A Fermi-liquid regime is observed below $T_{FL}$, with both transport coefficients diverging in parallel and $T_{FL}\to 0$ as $H\to H_c$, the critical field. The characteristic temperature of antiferromagnetic spin fluctuations, $T_{SF}$, is tuned to a minimum but {\it finite} value at $H_c$, which coincides with the end of the $T$-linear regime in the electrical resistivity. A third temperature scale, $T_{QP}$, signals the formation of quasiparticles, as fermions of charge $e$ obeying the Wiedemann-Franz law. Unlike $T_{FL}$, it remains finite at $H_c$, so that the integrity of quasiparticles is preserved, even though the standard signature of Fermi-liquid theory fails.

arXiv comment4 pages, 4 figures (published version)

References in corpus (17)

• Locally critical quantum phase transitions in strongly correlated metals
• Heavy-fermion superconductivity in CeCoIn5 at 2.3K
• The break up of heavy electrons at a quantum critical point
• Onset of antiferromagnetism in heavy fermion metals
• How do Fermi liquids get heavy and die?
• Field-Induced Quantum Critical Point in CeCoIn5
• Superconductivity and Quantum Criticality in CeCoIn_5
• Avoided Antiferromagnetic Order and Quantum Critical Point in CeCoIn${}_5$
• Intersite coupling effects in a Kondo lattice
• Unpaired Electrons in the Heavy-Fermion Superconductor CeCoIn_{5}
• Magnetotransport in nearly antiferromagnetic metals
• Pressure Study of Quantum Criticality in CeCoIn5
• Anisotropic three-dimentional magnetic fluctuations in heavy fermion CeRhIn5
• Heat Transport as a Probe of Electron Scattering by Spin Fluctuations: the Case of Antiferromagnetic CeRhIn5
• Thermal conductivity in the vicinity of the quantum critical endpoint in Sr3Ru2O7
• Spin Fluctuations and Non-Fermi-Liquid Behavior of CeNi_2Ge_2
• Non-local Magnetic Field-tuned Quantum Criticality in Cubic CeIn_{3-x}Sn_x (x=~0.25)

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