Two-dimensional fluctuations at the quantum-critical point of CeCu_{6-x}Au_x

Abstract

The heavy-fermion system CeCu_{6-x}Au_x exhibits a quantum critical point at x_c = 0.1 separating nonmagnetic and magnetically ordered ground states. The pronounced non-Fermi-liquid behavior at x_c calls for a search for the relevant quantum critical fluctuations. Systematic measurements of the inelastic neutron scattering cross section S(q,omega) for x = 0.1 reveal rod-like features in the reciprocal ac plane translating to two-dimensional (2d) fluctuations in real space. We find 3d magnetic ordering peaks for x = 0.2 and 0.3 located on these rods which hence can be viewed as 2d precursors of the 3d order.

4 pages, 4 eps figures included

References in corpus (4)

• Scaling of magnetic fluctuations near a quantum phase transition
• A mechanism for the non-Fermi-liquid behavior in CeCu_{6-x}Au_x
• Crossover and scaling in a nearly antiferromagnetic Fermi liquid in two dimensions
• Theory of finite temperature crossovers near quantum critical points close to, or above, their upper-critical dimension

Cited by in corpus (96)

• Fermi-liquid instabilities at magnetic quantum phase transitions
• Quantum Criticality in Heavy Fermion Metals
• Locally critical quantum phase transitions in strongly correlated metals
• Onset of antiferromagnetism in heavy fermion metals
• How do Fermi liquids get heavy and die?
• Singular Fermi Liquids
• 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
• Dimensional reduction at a quantum critical point
• Disorder-Driven Non-Fermi Liquid Behavior of Correlated Electrons
• Non-Fermi Liquid Behavior in U and Ce Alloys: Criticality, Disorder, Dissipation, and Griffiths-McCoy singularities
• Spin-fermion model near the quantum critical point: one-loop renormalization group results
• Spatial Correlations in Dynamical Mean Field Theory
• Global Magnetic Phase Diagram and Local Quantum Criticality in Heavy Fermion Metals
• Local fluctuations in quantum critical metals
• Critical local moment fluctuations in the Bose-Fermi Kondo model
• Frustration and quantum criticality
• Theories of non-Fermi liquid behavior in heavy fermions
• Orbital-selective Mott transitions: Heavy fermions and beyond
• Critical local-moment fluctuations, anomalous exponents, and omega/T scaling in the Kondo problem with a pseudogap
• Antiferromagnetic criticality at a heavy-fermion quantum phase transition
• Magnetotransport in nearly antiferromagnetic metals
• Locally critical point in an anisotropic Kondo lattice
• Approaching quantum criticality in a partially geometrically frustrated heavy-fermion metal
• What is the fate of the heavy electron at a quantum critical point?
• Grüneisen parameter studies on heavy fermion quantum criticality
• Thermoelectric Behaviour Near Magnetic Quantum Critical Point
• Non-Fermi liquid behavior from two-dimensional antiferromagnetic fluctuations: a renormalization-group and large-N analysis
• Quantum criticality in the cubic heavy-fermion system CeIn_{3-x}Sn_x
• Experimental signatures of quantum and topological states in frustrated magnetism
• Numerical renormalization-group study of the Bose-Fermi Kondo model
• 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
• Geometric Frustration and Dimensional Reduction at a Quantum Critical Point
• Quantum Critical Behavior in Kondo Systems
• Quantum phase transition from an antiferromagnet to a spin liquid in a metal
• Magnetic Pitch as a Tuning Fork for Superconductivity
• Anomalous scaling behavior of the dynamical spin susceptibility of Ce${}_{0.925}$La${}_{0.075}$Ru${}_2$Si${}_2$
• Supersymmetric spin operators
• Signature of quantum criticality in photoemission spectroscopy at elevated temperature
• c-axis magnetotransport in CeCoIn${}_5$
• Quantum Critical Point of Itinerant Antiferromagnet in Heavy Fermion
• Emergent Symmetry and Dimensional Reduction at a Quantum Critical Point
• Magnetic quantum phase transition in an anisotropic Kondo lattice
• Inelastic neutron scattering study of single crystal heavy fermion YbAgGe
• Fermi liquid near a quantum critical point
• Global Phase Diagram of the Kondo Lattice: From Heavy Fermion Metals to Kondo Insulators
• Quantum Criticality in Quasi-Two Dimensional Itinerant Antiferromagnets
• Signature of frustrated moments in quantum critical CePd${}_{1-x}$Ni${}_x$Al
• Two-dimensional heavy fermions on the strongly correlated boundaries of Kondo topological insulators
• Hall effect in the vicinity of quantum critical point in Tm1-xYbxB12
• Field-tuned quantum critical point of antiferromagnetic metals
• Time-resolved collapse and revival of the Kondo state near a quantum phase transition
• Quantum phase transitions and dimensional reduction in antiferromagnets with inter-layer frustration
• Fragile antiferromagnetism in the heavy-fermion compound YbBiPt
• Quantum phase transition in a two-dimensional Kondo-Heisenberg model: a Schwinger-boson large-N approach
• Pressure-induced residual resistivity anomaly in CeCu_5Au
• Reduced dimensionality in layered quantum dimer magnets: Frustration vs. inhomogeneous condensates
• Non-Fermi-liquid behavior in the Kondo lattices induced by peculiarities of magnetic ordering and spin dynamics
• Magnetic Quantum Phase Transitions in Kondo Lattices
• Non-local Magnetic Field-tuned Quantum Criticality in Cubic CeIn_{3-x}Sn_x (x=~0.25)
• Doping-induced redistribution of magnetic spectral weight in substituted hexaborides Ce${}_{1-x}$La${}_x$B${}_6$ and Ce${}_{1-x}$Nd${}_x$B${}_6$
• Quantum critical response function in quasi-two dimensional itinerant antiferromagnets
• The nature and boundary of the floating phase in a dissipative Josephson junction array
• Can Frustration Preserve a Quasi-Two-Dimensional Spin Fluid?
• Multidimensional entropy landscape of quantum criticality
• Quantum Lifshitz Point
• Nuclear magnetic resonance studies of pseudospin fluctuations in URu${}_2$Si${}_2$
• Echo of the Quantum Phase Transition of CeCu${}_{6-x}$Au${}_x$ in XPS: Breakdown of Kondo Screening
• Candidate Elastic Quantum Critical Point in LaCu${}_{6-x}$Au${}_x$
• Electron spectrum, thermodynamics and transport in antiferromagnetic metals at low temperatures
• Magnetic, thermal and transport properties of Cd doped CeIn${}_3$
• Some remarks about pseudo gap behavior of nearly antiferromagnetic metals
• Pressure dependence of the spin dynamics around a quantum critical point : An inelastic neutron scattering study of Ce0.87La0.13Ru2Si2
• Dimensional crossover in quantum critical metallic magnets
• Complex magneto-elastic properties in the frustrated kagome-staircase compounds (Co${}_{1-x}$Ni${}_x$)${}_3$V${}_2$O${}_8$
• Quantum criticality in layered CeRhIn_{5-x}Sn_x compared with cubic CeIn$_{3-x}Sn_x
• Griffiths phase of the Kondo insulator fixed point
• Impurity-Induced Antiferromagnetic Domains in the Periodic Anderson Model
• Further analysis of the quantum critical point of Ce${}_{1-x}$La${}_x$Ru${}_2$Si${}_2$
• Local quantum critical point and non-Fermi liquid properties
• Uniaxial stress effect on the quasi-one-dimensional Kondo lattice CeCo${}_2$Ga${}_8$
• Quantum criticality in Ce${}_{1-x}$Sm${}_x$CoIn${}_5$
• Evolution of the partially frustrated magnetic order in CePd${}_{1-x}$Ni${}_x$Al
• Magnetic and structural quantum phase transitions in CeCu6-xAux are independent
• Disorder effects on transport near AFM quantum phase transitions
• High-temperature signatures of quantum criticality in heavy fermion systems
• Scaling theory of magnetism in frustrated Kondo lattices
• Two-band model and RVB-type states: application to Kondo lattices, pyrochlores and Mn-based systems
• Developments in Correlated Fermions
• Renormalization group approach of itinerant electron systems near the Lifshitz point
• Kondo breakdown in multi-orbital Anderson lattices induced by destructive hybridization interference
• Flat-Band Driven Kondo Breakdown and Reentrant Effects in Heavy-Fermion Moiré Superlattices
• Anomalous Local Criticality in Heavy Fermion Metals from Holography
• Universal Mott quantum criticality in a modified periodic Anderson model
• Magnetism, non-Fermi-liquid behavior and deconfinement in Kondo lattices