Journal
NANO LETTERS
Volume 9, Issue 1, Pages 97-101Publisher
AMER CHEMICAL SOC
DOI: 10.1021/nl8025407
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Funding
- DOE [DE-FG0205ER46204]
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Despite its intrinsic nonequilibrium origin, thermoelectricity in nanoscale systems is usually described within a static scattering approach which disregards the dynamical interaction with the thermal baths that maintain energy flow. Using the theory of open quantum systems, we show instead that unexpected properties, such as a resonant structure and large sign sensitivity, emerge if the nonequilibrium nature of this problem is considered, Our approach also allows us to define and study a local temperature, which shows hot spots and oscillations along the system according to the coupling of the latter to the electrodes. This demonstrates that Fourier's law-a paradigm of statistical mechanics-is generally violated in nanoscale junctions.
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