A mechanism for the non-Fermi-liquid behavior in CeCu_{6-x}Au_x

Abstract

We propose an explanation for the recently observed non-Fermi-liquid behavior of metallic alloys CeCu_{6-x}Au_x: near x=0.1, the specific heat c is proportional to T \ln (T_0/T) and the resistivity increases linearly with temperature T over a wide range of T. These features follow from a model in which three-dimensional conduction electrons are coupled to two-dimensional critical ferromagnetic fluctuations near the quantum critical point, x_{c}=0.1. This picture is motivated by the neutron scattering data in the ordered phase (x=0.2) and is consistent with the observed phase diagram.

4 pages, LaTeX, 3 figures

References in corpus (3)

• Resistivity as a function of temperature for models with hot spots on the Fermi surface.
• Crossover and scaling in a nearly antiferromagnetic Fermi liquid in two dimensions
• On The Zero Temperature Critical Point in Heavy Fermions

Cited by in corpus (69)

• Fermi-liquid instabilities at magnetic quantum phase transitions
• Locally critical quantum phase transitions in strongly correlated metals
• Onset of antiferromagnetism in heavy fermion metals
• Weak magnetism and non-Fermi liquids near heavy-fermion critical points
• Non-Fermi liquid behavior and Griffiths phase in {\it f}-electron compounds
• Universally diverging Grueneisen parameter and the magnetocaloric effect close to quantum critical points
• Influence of Generic Scale Invariance on Classical and Quantum Phase Transitions
• Interplay of disorder and spin fluctuations in the resistivity near a quantum critical point
• Disorder-Driven Non-Fermi Liquid Behavior of Correlated Electrons
• Two-dimensional fluctuations at the quantum-critical point of CeCu_{6-x}Au_x
• Scaling of magnetic fluctuations near a quantum phase transition
• Kondo Breakdown and Hybridization Fluctuations in the Kondo-Heisenberg Lattice
• Local fluctuations in quantum critical metals
• Critical local moment fluctuations in the Bose-Fermi Kondo model
• Kondo Breakdown as a Selective Mott Transition in the Anderson Lattice
• Frustration and quantum criticality
• Theories of non-Fermi liquid behavior in heavy fermions
• Magnetotransport in nearly antiferromagnetic metals
• Incoherent non-Fermi liquid scattering in a Kondo lattice
• Localization-induced Griffiths phase of disordered Anderson lattices
• Thermoelectric Behaviour Near Magnetic Quantum Critical Point
• Strong coupling theory of heavy fermion criticality
• Non-Fermi liquid behavior from two-dimensional antiferromagnetic fluctuations: a renormalization-group and large-N analysis
• Selective Mott transition and heavy fermions
• Evidence of quantum criticality in the phase diagram of K${}_x$Sr${}_{1-x}$Fe${}_2$As${}_2$ from measurements of transport and thermoelectricity
• Fractionalization and Fermi surface volume in heavy fermion compounds: the case of YbRh${}_2$ Si${}_2$
• Grueneisen Ratio Divergence at the Quantum Critical Point in CeCu_{6-x}Ag_x
• Extended Dynamical Mean Field Theory Study of the Periodic Anderson Model
• Multi-scale fluctuations near a Kondo Breakdown Quantum Critical Point
• The thermopower as a signature of quantum criticality in heavy fermions
• Field-induced non-Fermi-liquid resistivity of stoichiometric YbAgGe single crystals
• Magnetic quantum phase transition in an anisotropic Kondo lattice
• Signatures of quantum criticality in the thermopower of Ba(Fe(1-x)Co(x))2As2
• Quantum Criticality in the Ferromagnetic Superconductor UCoGe under Pressure and Magnetic Field
• Theory of Scanning Tunneling Spectroscopy: from Kondo Impurities to Heavy Fermion Materials
• Geometrical frustration effects on charge-driven quantum phase transitions
• Hall effect in the vicinity of quantum critical point in Tm1-xYbxB12
• Time-resolved collapse and revival of the Kondo state near a quantum phase transition
• Field-tuned quantum critical point of antiferromagnetic metals
• Strong coupling theory of heavy fermion criticality II
• Quantum phase transition in a two-dimensional Kondo-Heisenberg model: a Schwinger-boson large-N approach
• Critical phenomena near the antiferromagnetic quantum critical point of Heavy-Fermions
• Echo of the Quantum Phase Transition of CeCu${}_{6-x}$Au${}_x$ in XPS: Breakdown of Kondo Screening
• Universality in Heavy Fermions Revisited
• Quantum Lifshitz Point
• The thermopower as a fingerprint of the Kondo breakdown quantum critical point
• Equivalence of single-particle and transport lifetimes from hybridization fluctuations
• Some remarks about pseudo gap behavior of nearly antiferromagnetic metals
• Dimensional crossover in quantum critical metallic magnets
• Spin - glass transition in Kondo lattice with quenched disorder
• Griffiths phase of the Kondo insulator fixed point
• Strange metal state near a heavy-fermion quantum critical point
• Anomalous specific heat jump in the heavy fermion superconductor CeCoIn${}_5$
• Critical quasiparticles in single-impurity and lattice Kondo models
• Antiferromagnetic metal to heavy-fermion metal quantum phase transition in the Kondo lattice model: A strong coupling approach
• Dynamic Spin Correlation Function near the Antiferromagnetic Quantum Phase Transition of Heavy-Fermions
• Effective action for the Kondo lattice model. New approach for S=1/2
• Whither Correlated Electron Theory?
• One-dimensionality signature in optical conductivity of heavy-fermion CeIr${}_3$B${}_2$
• Disorder effects on transport near AFM quantum phase transitions
• He3 bi-layers as a simple example of de-confinement
• Preformed heavy-electrons at the Quantum Critical Point in heavy fermion compounds
• Random Field effects in field-driven quantum critical points
• Role of vertex corrections in the $T$-linear resistivity at the Kondo breakdown quantum critical point
• Renormalization group approach of itinerant electron systems near the Lifshitz point
• Evidence of electron fractionalization in the Hall coefficient at Mott criticality
• Quantum Griffiths singularity in the stoichiometric heavy-fermion system CeRh${}_4$Al${}_{15}$
• Breakdown of the Kondo Effect in Critical Antiferromagnets
• The fate of Kondo resonances in certain Kondo lattices: a ``poor woman's'' scaling analysis