Bipolar thermoelectric effect in a srially coupled quantum dot system
Mesoscale and Nanoscale Physics
2015-05-27 v3
Abstract
The Seebeck coefficient (S) of a serially coupled quantum dot (SCQD) junction system is theoretically studied via a two-level Anderson model. A change of sign in S with respect to temperature is found, which arises from the competition between tunneling currents due to electrons and holes (i.e, bipolar tunneling effect). The change of sign in S implies that one can vary the equilibrium temperature to produce thermoelectric current in either the forward or reverse direction, leading to a bipolar thermoelectric effect. For the case of two parallel SCQDs, we also observe the oscillatory behavior of S with respect to temperature.
Cite
@article{arxiv.1104.2651,
title = {Bipolar thermoelectric effect in a srially coupled quantum dot system},
author = {David M. -T. Kuo and Yia-chung Chang},
journal= {arXiv preprint arXiv:1104.2651},
year = {2015}
}
Comments
revised argument and corrected some typos