Thermal transport in granular metals

Details Thermal transport in granular metals Thermal transport in granular metals

2004-02-06

arxiv.org/abs/cond-mat/0402190v2

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.

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