Kinks in the electronic specific heat

Abstract

We find that the heat capacity of a strongly correlated metal presents striking changes with respect to Landau Fermi liquid theory. In contrast with normal metals, where the electronic specific heat is linear at low temperature (with a T^3 term as a leading correction), a dynamical mean-field study of the correlated Hubbard model reveals a clear kink in the temperature dependence, marking a rapid change from a low-temperature linear behavior and a second linear regime with a reduced slope. Experiments on LiV2O4 support our findings, implying that correlated materials are more resistive to cooling at low T than expected from the intermediate temperature behavior.

4 pages

References in corpus (9)

• Evidence for ubiquitous strong electron-phonon coupling in high-temperature superconductors
• Quantum criticality
• Zero temperature metal-insulator transition in the infinite-dimensional Hubbard model
• Kinks in the dispersion of strongly correlated electrons
• Momentum-resolved spectral functions of SrVO${}_3$ calculated by LDA+DMFT
• Direct observation of the mass renormalization in SrVO${}_3$ by angle resolved photoemission spectroscopy
• Doped Mott insulator as the origin of heavy Fermion behavior in LiV2O4
• Orbital selectivity of the kink in the dispersion of Sr2RuO4
• Efficiency of quantum Monte Carlo impurity solvers for dynamical mean-field theory

Cited by in corpus (25)

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• Divergences of the irreducible vertex functions in correlated metallic systems: Insights from the Anderson Impurity Model
• Merging GW with DMFT and non-local correlations beyond
• Generalized dynamical mean-field theory in physics of strongly correlated systems
• Dynamical vertex approximation for nanoscopic systems
• Dynamical mean-field approach to materials with strong electronic correlations
• Interplay between local response and vertex divergences in many-fermion systems with on-site attraction
• Effective crystal field and Fermi surface topology: a comparison of d- and dp-orbital models
• Poor Man's Understanding of Kinks Originating from Strong Electronic Correlations
• Ab initio calculations with the dynamical vertex approximation
• Emergence of non-Fermi-liquid behavior due to Fermi surface reconstruction in the underdoped cuprate superconductors
• Emergence of a common energy scale close to the orbital-selective Mott transition
• Dynamical Mean-Field Theory
• Low quasiparticle coherence temperature in the one band-Hubbard model: A slave-boson approach
• Resistivity Exponents in 3D-Dirac Semimetals From Electron-Electron Interaction
• Shear viscosity of strongly interacting fermionic quantum fluids
• Kinks in the periodic Anderson model
• Fine structure of spectra in the antiferromagnetic phase of the Kondo lattice model
• Energy-scale cascade and correspondence between Mott and Kondo lattice physics
• Kinks: Fingerprints of strong electronic correlations
• Dynamical vertex approximation -- an introduction
• Variational Diagrammatic Monte-Carlo Built on Dynamical Mean-Field Theory