2004/02/29 by I. S. Beloborodov, I. S Beloborodov, A. V Lopatin +6
Chemistry · Materials Science · Physics and Astronomy · #Advanced Physical and Chemical Molecular Interactions #Chemical and Physical Properties of Materials #Thermal properties of materials #cond-mat.mes-hall
paper · pdf · doi:10.1209/epl/i2004-10355-6
published as Europhys. Lett. 69, 435 (2005) · Replaced with published version
openalex publication_date 2005/01/20 · arxiv created 2005/02/01 · arxiv updated 2009/12/01 · openalex created_date 2016/06/24 · openalex updated_date 2026/07/30
We study the electron thermal transport in granular metals at large tunnel conductance between the grains, g T >> 1, and not too low a temperature, T > g T δ, where δ is the mean energy level spacing for a single grain. Taking into account the electron-electron interaction effects, we calculate the thermal conductivity and show that the Wiedemann-Franz law is violated for granular metals. We find that interaction effects suppress the thermal conductivity less than the electrical conductivity.