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VOLUME 86 | ISSUE 12 | PAGE 884 Flattening of Single-Particle Spectra in Strongly Correlated Electron Systems and the Violation of the Wiedemann-Franz Law V. A. Khodel+,*, V. M. Yakovenko, M. V. Zverev+ +Russian Research Centre «Kurchatov Institute", 123182 Moscow, Russia *McDonnell Center for the Space Science and Department of Physics, Washington University, St.Louis, MO 63130, USA Condensed Matter Theory Center and Center for Superconductivity Research, Department of Physics, University of Maryland, College Park, Maryland 20742-4111, USA PACS: 71.10.Hf, 71.27.+a Abstract The renormalization of the Wiedemann-Franz (WF) ratio in strongly correlated electron systems is analyzed within the Landau quasiparticle picture. We demonstrate that the WF law is violated: (i) at the quantum critical point, where the effective mass diverges, and (ii) beyond a point of fermion condensation, where the single-particle spectrum ε(p) becomes flat. Results of the analysis are compared with available experimental data. Download PS file (GZipped, 781.8K)  |  Download PDF file (687.1K) Список работ, цитирующих данную статью, см. здесь. List of articles citing this article can be found here.