Breakdown of Fermi-liquid theory in a cuprate superconductor

Abstract

The behaviour of electrons in solids is remarkably well described by Landau's Fermi-liquid theory, which says that even though electrons in a metal interact they can still be treated as well-defined fermions, called ``quasiparticles''. At low temperature, the ability of quasiparticles to transport heat is strictly given by their ability to transport charge, via a universal relation known as the Wiedemann-Franz law, which no material in nature has been known to violate. High-temperature superconductors have long been thought to fall outside the realm of Fermi-liquid theory, as suggested by several anomalous properties, but this has yet to be shown conclusively. Here we report on the first experimental test of the Wiedemann-Franz law in a cuprate superconductor, (Pr,Ce)${}_2$CuO${}_4$. Our study reveals a clear departure from the universal law and provides compelling evidence for the breakdown of Fermi-liquid theory in high-temperature superconductors.

7 pages, 3 figures

References in corpus (2)

• Highly Anisotropic Gap Function in Borocarbide Superconductor LuNi_2B_2C
• Possible pseudogap behavior of electron doped high-temperature superconductors

Cited by in corpus (90)

• Observation of the Dirac fluid and the breakdown of the Wiedemann-Franz law in graphene
• Progress and perspectives on the electron-doped cuprates
• SO(5) Theory of Antiferromagnetism and Superconductivity
• Heat Transport in a Strongly Overdoped Cuprate: Fermi Liquid and Pure d-wave BCS Superconductor
• Thermal Conductivity across the Phase Diagram of Cuprates: Low-Energy Quasiparticles and Doping Dependence of the Superconducting Gap
• Ring exchange, the Bose metal, and bosonization in two dimensions
• The ground state of heavily-overdoped non-superconducting La${}_{2-x}$Sr${}_x$CuO${}_4$
• Thermal conductivity of single crystalline MgB_2
• Giant electron-electron scattering in the Fermi-liquid state of Na_0.7CoO_2
• Breakdown of Fermi liquid description for strongly interacting fermions
• Fermi-liquid ground state in n-type copper-oxide superconductor Pr0.91Ce0.09LaCuO4-y
• Electronic hydrodynamics and the breakdown of the Wiedemann-Franz and Mott laws in interacting metals
• Scattering Theory of Nonlinear Thermoelectricity in Quantum Coherent Conductors
• Large violation of Wiedemann Franz law in Luttinger liquids
• Composite-Fermion Theory for Pseudogap, Fermi Arc, Hole Pocket, and Non-Fermi-Liquid of Underdoped Cuprate Superconductors
• Evolution of Superconductivity in Electron-Doped Cuprates: Magneto-Raman Spectroscopy
• A Sum Rule for Thermal Conductivity and Dynamical Thermal Transport Coefficients in Condensed Matter -I
• The Origin of Anomalous Low-Temperature Downturns in the Thermal Conductivity of Cuprates
• Failure of the Wiedemann-Franz Law in Mesoscopic Conductors
• Effect of gauge boson mass on chiral symmetry breaking in QED${}_3$
• Violation of Wiedemann-Franz law at the Kondo breakdown quantum critical point
• Spin and thermal conductivity of quantum spin ladders
• Nernst effect in the electron-doped cuprate superconductor PCCO: Superconducting fluctuations, upper critical field Hc2, and the origin of the Tc dome
• Breakdown of the Wiedemann-Franz law in a unitary Fermi gas
• Effect of a magnetic field on the long-range magnetic order in insulating Nd2CuO4, nonsuperconducting and superconducting Nd1.85Ce0.15CuO4
• Field-Induced Thermal Metal-to-Insulator Transition in Underdoped LSCO
• Point contact spectroscopy of the electron-doped cuprate superconductor Pr{2-x}Ce{x}CuO4: The dependence of conductance-voltage spectra on cerium doping, barrier strength and magnetic field
• Onset of a boson mode at superconducting critical point of underdoped YBa2Cu3Oy
• Transport properties in the d-density-wave state in an external magnetic field: The Wiedemann-Franz law
• Wiedemann-Franz law in the underdoped cuprate superconductor YBa2Cu3Oy
• Electronic thermal conductivity of disordered metals
• Heat transport in Bi_{2+x}Sr_{2-x}CuO_{6+δ}: departure from the Wiedemann-Franz law in the vicinity of the metal-insulator transition
• Electronic structure of kinetic energy driven cuprate superconductors
• Cofermion Theory for Pseudogap Phenomena and Superconducting Mechanism of Underdoped Cuprate Superconductors
• Heat conduction and Wiedemann-Franz Law in disordered Luttinger Liquids
• Electronic Thermal Transport Measurement in Low-Dimensional Materials with Graphene Nonlocal Noise Thermometry
• Gauge invariant dressed holon and spinon in doped cuprates
• Thermal conductivity in the vicinity of the quantum critical endpoint in Sr3Ru2O7
• Transport properties in the d-density wave state: Wiedemann-Franz law
• Critical Theory of the Two-Channel Anderson Impurity Model
• Spin-charge separation in Aharonov-Bohm rings of interacting electrons
• Emergent ferromagnetism with Fermi-liquid behavior in proton intercalated CaRuO3
• Test of the Wiedemann-Franz law in an optimally-doped cuprate
• Violation of the Wiedemann-Franz Law for ultracold atomic gases
• Lorenz number in high Tc superconductors: evidence for bipolarons
• Disordered d-wave superconductors with interactions
• Violation of the Wiedemann-Franz Law in a Large-N Solution of the t-J Model
• VO: A Strongly Correlated Metal Close to a Mott- Hubbard Transition
• Chiral symmetry breaking and violation of the Wiedemann-Franz law in underdoped cuprates
• Low-energy excitations around (π/2, π/2) points in the pseudogap phase of Nd_1.85Ce_0.15CuO_4
• Features of spin-charge separation in the equilibrium conductance through finite rings
• Large Thermoelectric Effects in Unconventional Superconductors
• The Lorenz number in the optimally doped and underdoped Eu-123 superconductor
• Enhancement of the Hall-Lorenz number in optimally doped YBa2Cu3O_7-d
• The Wiedemann-Franz law in doped Mott insulators without quasiparticles
• Superconducting critical temperature in the extended diffusive SYK model
• The Roton Fermi Liquid
• Interaction corrections: temperature and parallel field dependencies of the Lorentz number in two-dimensional disordered metals
• Gate-tunable quantum acoustoelectric transport in graphene
• Theory of thermal and charge transport in diffusive normal metal / superconductor junctions
• Chiral topological excitonic insulator in semiconductor quantum wells
• Thermal conductivity and heat diffusion in the two-dimensional Hubbard model
• Inhomogeneous electronic structure probed by spin-echo experiments in the electron doped high-Tc superconductor Pr_{1.85}Ce_{0.15}CuO_{4-y}
• Breakdown of the Wiedemann-Franz law in strongly-coupled electron-phonon system, application to the cuprates
• Chirality dependence in charge and heat transport in thermal QCD
• Possible Z2 phase and spin-charge separation in electron doped cuprate superconductors
• Hall-Lorenz number paradox in cuprate superconductors
• Theory of time-resolved spectral function in high-temperature superconductors with bosonic modes
• Spin-charge separation in strongly interacting finite ladder rings
• Quasi-particle Density in Sr2RuO4 Probed by means of the Phonon Thermal Conductivity
• Superconducting materials - a topical overview
• Large Oscillatory Thermal Hall Effect in Kagome Metals
• Thermal transport across a continuous metal-insulator transition
• Resonance triplet dynamics in the quenched unitary Bose gas
• Wiedemann-Franz law violation domain for graphene and nonrelativistic systems
• Unusual heat transport in underdoped cuprates
• Doping dependence of charge dynamics in electron-doped cuprates
• Role of the impurity-potential range in disordered d-wave superconductors
• Flattening of Single-Particle Spectra in Strongly Correlated Electron Systems and the Violation of the Wiedemann-Franz Law
• The extended diffusive Sachdev-Ye-Kitaev model as a sort of "strange metal"
• Transport in vortex state of d-wave superconductors at zero temperature: Wiedemann-Franz violation
• Anderson localization of spinons in a spin-1/2 antiferromagnetic Heisenberg chain
• The short-range correlations of a doped Mott insulator
• Metal-insulator (fermion-boson)-crossover origin of pseudogap phase of cuprates I: anomalous heat conductivity, insulator resistivity boundary, nonlinear entropy
• d-density wave state in an external magnetic field
• An extensive thermal conductivity measurement method based on atomic force microscopy
• Thermoelectric effect on diffusion in the two-dimensional Hubbard model
• Intra pseudogap- and superconductivity-pair spin and charge fluctuations and underdome metal-insulator (fermion-boson)-crossover phenomena as keystones of cuprate physics
• Normal state pair nematicity and hidden magnetic order and metal-insulator (fermion-boson)- crossover origin of pseudogap phase of cuprates II
• Thermal Spin Valves