Multiple energy scales at a quantum critical point

Abstract

We report thermodynamic measurements in a magnetic-field-driven quantum critical point of a heavy fermion metal, YbRh${}_2$Si${}_2$. The data provide evidence for an energy scale in the equilibrium excitation spectrum, that is in addition to the one expected from the slow fluctuations of the order parameter. Both energy scales approach zero as the quantum critical point is reached, thereby providing evidence for a new class of quantum criticality.

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Cited by in corpus (128)

• Fermi-liquid instabilities at magnetic quantum phase transitions
• Quantum Criticality in Heavy Fermion Metals
• Heavy Fermions and Quantum Phase Transitions
• Quantum phases driven by strong correlations
• Strongly Correlated Materials
• Fermi-surface collapse and dynamical scaling near a quantum critical point
• Heavy-electron quantum criticality and single-particle spectroscopy
• Destruction of Kondo effect in cubic heavy fermion compound Ce3Pd20Si6
• Quantum Valence Criticality as Origin of Unconventional Critical Phenomena
• Quantum Criticality and Global Phase Diagram of Magnetic Heavy Fermions
• Evidence for a Non-Fermi-Liquid Phase in Ge-Substituted YbRh2Si2
• Orbital-selective Mott transitions: Heavy fermions and beyond
• Emergence of superconductivity in the canonical heavy-electron metal YbRh2Si2
• Detection of quantum critical points by a probe qubit
• Quantum-critical phase out of frustrated magnetism in a strongly correlated metal
• Persistence of coherent quantum dynamics at strong dissipation
• Roles of Critical Valence Fluctuations in Ce- and Yb-Based Heavy Fermion Metals
• Divergence of the Magnetic Grüneisen Ratio at the Field-Induced Quantum Critical Point in YbRh${}_2$Si${}_2$
• Spin Liquids and Antiferromagnetic Order in the Shastry-Sutherland-Lattice Yb${}_2$Pt${}_2$Pb
• Magnetic field tuned quantum criticality of heavy fermion system YbPtBi
• Kondo Destruction and Quantum Criticality in Kondo Lattice Systems
• Temperature-dependent Fermi surface evolution in heavy fermion CeIrIn5
• Ultraslow quantum dynamics in a sub-Ohmic heat bath
• Interplay between Kondo suppression and Lifshitz transitions in YbRh${}_2$Si${}_2$ at high magnetic fields
• Zeeman-driven Lifshitz transition: A scenario for the Fermi-surface reconstruction in YbRh2Si2
• Grüneisen parameter studies on heavy fermion quantum criticality
• Multiscale quantum criticality: Pomeranchuk instability in isotropic metals
• Superconductivity in an extreme strange metal
• Spin Fluctuation Theory for Quantum Tricritical Point Arising in Proximity to First-Order Phase Transitions: Applications to Heavy-Fermion Systems, YbRh2Si2, CeRu2Si2, and beta-YbAlB4
• Evolution of magnetism in Yb(Rh_(1-x)Co_x)2Si2
• Strong ferromagnetism at the surface of an antiferromagnet caused by buried magnetic moments
• Heavy Fermion Quantum Criticality and Destruction of the Kondo Effect in a Nickel Oxypnictide
• Phenomenology of ESR in heavy fermion systems: Fermi liquid and non-Fermi liquid regime
• Evolution of the Kondo lattice and non-Fermi liquid excitations in a heavy-fermion metal
• Weyl-Kondo semimetals in nonsymmorphic systems
• Thermodynamic Properties of Kagome Lattice in ZnCu_3(OH)_6Cl_2 Herbertsmithite
• The Hidden Phase of the Spin-Boson Model
• YbRh2Si2: Quantum tricritical behavior in itinerant electron systems
• Separation of energy scales in undoped YbRh${}_2$Si${}_2$ under hydrostatic pressure
• Large and Small Fermi-Surface Spin Density Waves in the Kondo Lattice Model
• Valence Change Driven by Constituent Element Substitution in the Mixed-Valence Quasicrystal and Approximant Au-Al-Yb
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• Violation of critical universality at the antiferromagnetic phase transition of YbRh2Si2
• Unconventional quantum criticality emerging as a new common language of transition-metal compounds, heavy-fermion systems, and organic conductors
• Pressure-Driven Quantum Criticality and T/H Scaling in the Icosahedral Au-Al-Yb Approximant
• Evidence for a Kondo destroying quantum critical point in YbRh2Si2
• Scaling and Enhanced Symmetry at the Quantum Critical Point of the Sub-Ohmic Bose-Fermi Kondo Model
• Unconventional fully-gapped superconductivity in the heavy-fermion metal CeCu${}_2$Si${}_2$
• Finite Size Scaling of Classical Long-Ranged Ising Chains and the Criticality of Dissipative Quantum Impurity Models
• New Universality Class of Quantum Criticality in Ce- and Yb-based Heavy Fermions
• Global Phase Diagram of the Kondo Lattice: From Heavy Fermion Metals to Kondo Insulators
• Spin Path Integrals, Berry phase, and the Quantum Phase Transition in the sub-Ohmic Spin-boson Model
• Strong coupling theory of heavy fermion criticality II
• Quantum critical behavior in heavy electron materials
• Scaling in Dynamic Susceptibility of Herbertsmithite and Heavy-Fermion Metals
• Entropy paradox in strongly correlated Fermi systems
• Evolution of the Kondo resonance feature and its relationship to spin-orbit coupling across the quantum critical point in Ce2Rh{1-x}CoxSi3
• Kondo Destruction in Heavy Fermion Quantum Criticality and the Photoemission Spectrum of YbRh${}_2$Si${}_2$
• Strongly correlated Fermi-systems: non-Fermi liquid behavior, quasiparticle effective mass and their interplay
• Interplay between unconventional superconductivity and heavy-fermion quantum criticality: CeCu${}_2$Si${}_2$ versus YbRh${}_2$Si${}_2$
• Supersymmetric approach to heavy fermion systems
• Kondo destruction in a quantum paramagnet with magnetic frustration
• New state of matter: heavy-fermion systems, quantum spin liquids, quasicrystals, cold gases, and high temperature superconductors
• High magnetic fields thermodynamics of heavy fermion metal YbRh2Si2
• Towards ferromagnetic quantum criticality in FeGa3-xGex: 71Ga NQR as a zero field microscopic probe
• General properties of phase diagrams of heavy-fermion metals
• Quantum Criticality and Novel Phases: A panel discussion
• Pairing Correlations Near a Kondo-Destruction Quantum Critical Point
• Quasiparticles of strongly correlated Fermi liquids at high temperatures and in high magnetic fields
• Critical slowing down of fermions near a magnetic quantum phase transition
• Dynamical scaling of charge and spin responses at a Kondo destruction quantum critical point
• Pressure-induced ferromagnetism with strong Ising-type anisotropy in YbCu${}_2$Si${}_2$
• Dynamics of quantum coherences at strong coupling to a heat bath
• Spin-flip scattering of critical quasiparticles and the phase diagram of YbRh2Si2
• CeIr${}_3$Ge${}_7$: a local moment antiferromagnetic metal with extremely low ordering temperature
• Magnetization study of the energy scales in YbRh${}_2$Si${}_2$ under chemical pressure
• Quantum critical metals and loss of quasiparticles
• Terahertz Conductivity of Heavy-fermion Systems from Time-resolved Spectroscopy
• Ferromagnetic ordering along the hard axis in the Kondo lattice YbIr3Ge7
• Quantum criticality in layered CeRhIn_{5-x}Sn_x compared with cubic CeIn$_{3-x}Sn_x
• Dimensional crossover in quantum critical metallic magnets
• CeCu_2Ge_2: Challenging our Understanding of Quantum Criticality
• Heat transport in magnetic fields by quantum spin liquid in the organic insulators EtMe3Sb[Pd(dmit)2]2 and κ-(BEDT-TTF)2Cu2(CN)3
• Break up of heavy fermions at an antiferromagnetic instability
• Direct Evidence for the Existence of Heavy Quasiparticles in the Magnetically Ordered Phase of CeRhIn${}_5$
• Nature of the quantum critical point as disclosed by extraordinary behavior of magnetotransport and the Lorentz number in the heavy-fermion metal YbRh2Si2
• Energy scales and magnetoresistance at a quantum critical point
• Transport Spectroscopy of the Field Induced Cascade of Lifshitz Transitions in YbRh2Si2
• Interwoven atypical quantum states in CeLiBi${}_2$
• Electro-nuclear transition into a spatially modulated magnetic state in YbRh${}_2$Si${}_2$
• Quantum criticality with multiple dynamics
• Magnetic phase diagram of YbCo2Si2 derived from magnetization measurements
• Influence of Quantum Critical Point of First Order Valence Transition on Ce- and Yb-Based Heavy Fermions
• Quantum Criticality and Novel Phases: Summary and Outlook
• Doping-induced band shifts and Lifshitz transitions in heavy-fermion metals
• The high-field Fermi surface of YbRh2Si2
• Strongly correlated Fermi systems as a new state of matter
• Cluster Extended Dynamical Mean Field Approach and Unconventional Superconductivity
• Energy scales and the non-Fermi liquid behavior in YbRh2Si2
• Signatures of phase transitions in the microwave response of YbRh2Si2
• Tuning low-energy scales in YbRh${}_2$Si${}_2$ by non-isoelectronic substitution and pressure
• Evidence for charge delocalization crossover in the quantum critical superconductor CeRhIn${}_5$
• Robust Fermi-Surface Morphology of CeRhIn${}_5$ across the Putative Field-Induced Quantum Critical Point
• Quantum Phase Transition in the Itinerant Antiferromagnet (V0.9Ti0.1)2O3
• Type II superconductivity in SrPd2Ge2
• Magnetic Single-Electron Transistor as a Tunable Model System for Kondo-Destroying Quantum Criticality
• Low-temperature thermopower study of YbRh2Si2
• Comment on "Zeeman-Driven Lifshitz Transition: A Model for the Experimentally Observed Fermi-Surface Reconstruction in YbRh2Si2"
• Thermodynamic, dynamic and transport properties of quantum spin liquid in herbertsmithite from experimental and theoretical point of view
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• Fermi surface enlargement on the Kondo lattice
• Spin-singlet and spin-triplet pairing correlations in antiferromagnetically coupled Kondo systems
• Critical Kondo destruction and the violation of the quantum-to-classical mapping of quantum criticality
• Development of the critical exponent at the antiferromagnetic phase transition of YbRh2Si2 under chemical pressure
• Fermion condensate generates a new state of matter by making flat bands
• Magnetic field dependence of the antiferromagnetic phase transitions in Co-doped YbRh_2Si_2
• Enhancing exotic quantum fluctuations in a strongly entangled cavity BEC system
• Reply to Comment by S. Friedemann et al. on "Zeeman-Driven Lifshitz Transition: A Model for the Experimentally Observed Fermi-Surface Reconstruction in YbRh2Si2"
• Electrical resistivity ofYb(Rh1-xCox)2Si2 single crystals at low temperatures
• Nonlinear Pauli Susceptibilities in Sr${}_3$Ru${}_2$O${}_7$ and Universal Features of Itinerant Metamagnetism
• Effect of chemical substitution and pressure on YbRh2Si2
• Quantum-critical resistivity of strange metals in a magnetic field
• Gate-defined Kondo lattices with valley-helical quantum dot arrays
• Quantum-critical transport in marginal Fermi liquids
• Magnetization study on the field-induced quantum critical point in YbRh_2Si_2
• Quantum criticality in Yb(Rh0.97Co0.03)2Si2 probed by low-temperature resistivity
• Critical quasiparticle theory: Scaling, thermodynamic and transport properties
• Localized moments and the stability of antiferromagnetic order in Yb3Pt4