Giant Thermoelectric Effect from Transmission Supernodes

Details Giant Thermoelectric Effect from Transmission Supernodes Giant Thermoelectric Effect from Transmission Supernodes

2010-03-09

arxiv.org/abs/1003.2000v1

ACS Nano, 2010, 4 (9), pp 5314-5320

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

5 pages, 6 figures

Scientific paper

10.1021/nn100490g

We predict an enormous order-dependent quantum enhancement of thermoelectric effects in the vicinity of a higher-order `supernode' in the transmission spectrum of a nanoscale junction. Single-molecule junctions based on 3,3'-biphenyl and polyphenyl ether (PPE) are investigated in detail. The nonequilibrium thermodynamic efficiency and power output of a thermoelectric heat engine based on a 1,3-benzene junction are calculated using many-body theory, and compared to the predictions of the figure-of-merit ZT.

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