Journal
NANO LETTERS
Volume 9, Issue 3, Pages 1011-1014Publisher
AMER CHEMICAL SOC
DOI: 10.1021/nl8031229
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Funding
- NSF [DMR-0506953, DMR-0639822]
- ONR [N00014-07-1-0878, N00014-07-1-1085]
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Molecular nanojunctions may support efficient thermoelectric conversion through enhanced thermopower. Recently, this quantity has been measured for several conjugated molecular nanoJunctions with gold electrodes. Considering the wide variety of possible metal/molecule systems-almost none of which have been studied-it seems highly desirable to be able to calculate the thermopower of Junctions with reasonable accuracy slid high efficiency. To address this task, we demonstrate an effective approach based on the single particle green function (SPGF) method combined with density functional theory (DFT) using B3LYP and PBE0 energy functionals. Systematic good agreement between theory and experiment Is obtained; indeed, much better agreement is found here than for comparable calculations of the conductance.
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