Quantum criticality and Lifshitz transition in the Ising system CeRu2Si2: Comparison with YbRh2Si2

Abstract

New thermoelectric power (TEP) measurements on prototype heavy-fermion compounds close to magnetic quantum criticality are presented. The highly sensitive technique of TEP is an unique tool to reveal Fermi surface instabilities, referred here as Lifshitz transitions. The first focus is on the Ising CeRu2Si2 series. Doping CeRu2Si2 with Rh produces a decoupling between the first order metamagnetic transition and the pseudo-metamagnetism observed in the pure compound. Comparison is made with the case of YbRh2Si2 which is often considered as the archetype of local quantum criticality by contrast to CeRu2Si2, taken as an example of spin-density wave criticality. Up to now for ferromagnetic materials showing ferromagnetic wings, no simple case appears where the Fermi surface is preserved between the ferromagnetic and paramagnetic phases. An open issue is the consequence of Lifshitz transitions on superconductivity in these multiband systems.

invited paper to SCES 2014 conference

References in corpus (29)

• Fermi-liquid instabilities at magnetic quantum phase transitions
• Quantum Criticality in Heavy Fermion Metals
• Magnetic-Field Induced Quantum Critical Point in YbRh${}_2$Si${}_2$
• Tricritical point and wing structure in the itinerant ferromagnet UGe2
• Continuous Evolution of the Fermi Surface of CeRu2Si2 across the Metamagnetic Transition
• High-Field Superconductivity at an Electronic Topological Transition in URhGe
• Ferromagnetic Quantum Critical Endpoint in UCoAl
• Thermal and Electrical Transport across a Magnetic Quantum Critical Point
• Magnetic-Field Dependence of the YbRh2Si2 Fermi Surface
• Antiferromagnetic criticality at a heavy-fermion quantum phase transition
• Evolution toward Quantum Critical End Point in UGe_2
• Itinerant metamagnetism of CeRu2Si2 : bringing out the dead. Comparison with the new Sr3Ru2O7 case
• 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
• Itinerant vs Localized Heavy-Electron Magnetism
• Universal signatures of the metamagnetic quantum critical endpoint: Application to CeRu2Si2
• 4f-derived Fermi Surfaces of CeRu2(Si[1-x]Ge[x])2 near the Quantum Critical Point: Resonant Soft X-ray ARPES Study
• Magnetic Polarization and Fermi Surface Instability: Case of YbRh2Si2
• Verification of the Wiedemann-Franz law in YbRh2Si2 at a quantum critical point
• Spin Fluctuation in Heavy Fermion CeRu_2Si_2
• Thermoelectric transport across the metamagnetic transition of CeRu2Si2
• Decoupling between Field-instabilities of Antiferromagnetism and Pseudo-metamagnetism in Rh-doped CeRu2Si2 Kondo Lattice
• Thermoelectricity of the Ferromagnetic Superconductor UCoGe
• Thermoelectric response near a quantum critical point of beta-YbAlB4 and YbRh2Si2: A comparative study
• Wiedemann-Franz law and non-vanishing temperature scale across the field-tuned quantum critical point of YbRh2Si2
• Pressure Evolution of the Magnetic Field induced Ferromagnetic Fluctuation through the Pseudo-Metamagnetism of CeRu2Si2
• Metamagnetic Transition in UCoAl Probed by Thermoelectricity Measurements
• Fermi Surface Reconstruction inside the Hidden Order Phase of URu2Si2 Probed by Thermoelectric Measurements
• Magnetic Field Driven Electronic Singularities through Metamagnetic Phenomena: Case of the Heavy Fermion Antiferromagnet Ce(Ru0.92Rh0.08)2Si2

Cited by in corpus (5)

• Field-induced spin-density wave beyond hidden order in URu2Si2
• Three-dimensional critical phase diagram of the Ising antiferromagnet CeRh${}_2$Si${}_2$ under intense magnetic field and pressure
• Magnetic fluctuations and specific heat in NaxCoO2 near a Lifshitz topological transition
• Interplay between unconventional superconductivity and heavy-fermion quantum criticality: CeCu${}_2$Si${}_2$ versus YbRh${}_2$Si${}_2$
• CeCu${}_2$Si${}_2$ and YbRh${}_2$Si${}_2$: Strange Cases of Heavy-Fermion Superconductivity