Giant Thermoelectric Effect from Transmission Supernodes

Abstract

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.

5 pages, 6 figures

References in corpus (3)

• Giant thermopower and figure of merit in single-molecule devices
• Many-body theory of electronic transport in single-molecule heterojunctions
• Quantum Interference Controlled Molecular Electronics

Cited by in corpus (1)

• The number of transmission channels through a single-molecule junction