Thermoelectric efficiency in nanojunctions: a comparison between atomic junctions and molecular junctions.

@article{Liu2009ThermoelectricEI,
  title={Thermoelectric efficiency in nanojunctions: a comparison between atomic junctions and molecular junctions.},
  author={Yu-shen Liu and Yi-Ren Chen and Yongqi Chen},
  journal={ACS nano},
  year={2009},
  volume={3 11},
  pages={
          3497-504
        }
}
Using first-principles approaches, we investigate the thermoelectric efficiency, characterized by the figure of merit ZT, in metallic atomic junctions and insulating molecular junctions. To gain insight into the properties of ZT, an analytical theory is also developed to study the dependence of ZT on lengths (l) and temperatures (T). The theory considers the combined heat current carried by electrons and phonons. We observe a characteristic temperature: T(0) = (beta/gamma(/))(1/2). When T << T… CONTINUE READING

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