2007/12/31 by A. Toschi, Massimo Capone, M. Capone +3 · 1 citation
Materials Science · Physics and Astronomy · #Advanced Condensed Matter Physics #Condensed matter physics #Fermi liquid theory #Field (mathematics) #Hubbard model #Linear response theory #Magnetic and transport properties of perovskites and related materials #Materials science #Metal #Physics #Physics of Superconductivity and Magnetism #Specific heat #Superconductivity #Thermodynamics #cond-mat.mtrl-sci #cond-mat.str-el
paper · pdf · doi:10.1103/physrevlett.102.076402
published as Phys. Rev. Lett. 102, 076402 (2009) · 4 pages
openalex publication_date 2009/02/17 · arxiv created 2009/07/21 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
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 T3 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.