Physics – Condensed Matter – Mesoscale and Nanoscale Physics
Scientific paper
2004-02-06
Europhys. Lett. 69, 435 (2005)
Physics
Condensed Matter
Mesoscale and Nanoscale Physics
Replaced with published version
Scientific paper
10.1209/epl/i2004-10355-6
We study the electron thermal transport in granular metals at large tunnel conductance between the grains, $g_T \gg 1$ and not too low a temperature $T > g_T\delta$, where $\delta$ 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.
Beloborodov Igor S.
Fazio Rosario
Hekking Frank W. J.
Lopatin Andrei V.
Vinokur Valeri M.
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