Quantum Critical Point of Itinerant Antiferromagnet in Heavy Fermion

Abstract

A quantum critical point (QCP) of the heavy fermion Ce(Ru_{1-x}Rh_x)_2Si_2 (x = 0, 0.03) has been studied by single-crystalline neutron scattering. By accurately measuring the dynamical susceptibility at the antiferromagnetic wave vector k_3 = 0.35 c^*, we have shown that the energy width Gamma(k_3), i.e., inverse correlation time, depends on temperature as Gamma(k_3) = c_1 + c_2 T^{3/2 +- 0.1}, where c_1 and c_2 are x dependent constants, in a low temperature range. This critical exponent 3/2 +- 0.1 proves that the QCP is controlled by that of the itinerant antiferromagnet.

4 pages, 3 figures

References in corpus (12)

• Locally critical quantum phase transitions in strongly correlated metals
• Onset of antiferromagnetism in heavy fermion metals
• How do Fermi liquids get heavy and die?
• Hall-effect evolution across a heavy-fermion quantum critical point
• Two-dimensional fluctuations at the quantum-critical point of CeCu_{6-x}Au_x
• Magnetic correlations and quantum criticality in the insulating antiferromagnetic, insulating spin liquid, renormalized Fermi liquid, and metallic antiferromagnetic phases of the Mott system V_2O_3
• Anomalous scaling behavior of the dynamical spin susceptibility of Ce${}_{0.925}$La${}_{0.075}$Ru${}_2$Si${}_2$
• Spin Fluctuation in Heavy Fermion CeRu_2Si_2
• Inelastic neutron scattering study of single crystal heavy fermion YbAgGe
• Spin Fluctuations and Non-Fermi-Liquid Behavior of CeNi_2Ge_2
• Non-Fermi-Liquid Scaling in Ce(Ru_{0.5}Rh_{0.5})_2Si_2
• Pressure dependence of the spin dynamics around a quantum critical point : An inelastic neutron scattering study of Ce0.87La0.13Ru2Si2

Cited by in corpus (19)

• Fermi-liquid instabilities at magnetic quantum phase transitions
• Quantum Criticality in Heavy Fermion Metals
• Quantum Criticality and Global Phase Diagram of Magnetic Heavy Fermions
• 4f-derived Fermi Surfaces of CeRu2(Si[1-x]Ge[x])2 near the Quantum Critical Point: Resonant Soft X-ray ARPES Study
• Existence of Heavy Fermions in the Antiferromagnetic Phase of CeIn3
• Decoupling between Field-instabilities of Antiferromagnetism and Pseudo-metamagnetism in Rh-doped CeRu2Si2 Kondo Lattice
• Infrared properties of heavy-fermions: evolution from weak to strong hybridizations
• Two-dimensional heavy fermions on the strongly correlated boundaries of Kondo topological insulators
• Lifshitz Transition and Metamagnetism: Thermoelectric Studies of CeRu${}_2$Si${}_2$
• Ultra-High Resolution Neutron Spectroscopy of Low-Energy Spin Dynamics in UGe${}_2$
• Unusual Coupling Between Field-induced Spin Fluctuations and Spin Density Wave in Intermetallic CeAg2Ge2
• Further analysis of the quantum critical point of Ce${}_{1-x}$La${}_x$Ru${}_2$Si${}_2$
• Quantum Phase Transition in the Itinerant Antiferromagnet (V0.9Ti0.1)2O3
• Transport and magnetic behavior under pressure and high-resolution photoemission studies of Ce2Rh(o.7)Co(0.3)Si3, an alloy on the verge of quantum critical point
• Evidence for magnetic clusters in stoichiometric quantum critical CeRu${}_2$Si${}_2$
• Critical Kondo destruction and the violation of the quantum-to-classical mapping of quantum criticality
• Quantum criticality of Ce${}_{1-x}$La${}_x$Ru${}_2$Si${}_2$ : the magnetically ordered phase
• Quantum Critical Fluctuations in the Heavy fermion compound Ce(Ni${}_{0.935}$Pd${}_{0.065}$)${}_2$Ge${}_2$
• A Quantitative Solution to the Kondo Lattice Problem