Zimbovskaya Natalya A
Department of Physics and Electronics, University of Puerto Rico-Humacao, CUH Station, Humacao, PR 00791, United States of America.
J Phys Condens Matter. 2022 Apr 20;34(25). doi: 10.1088/1361-648X/ac640c.
In the present work we theoretically study Seebeck effect in a set of several quantum dots in a serial configuration coupled to nonmagnetic conducting electrodes. We focus on the combined effect of intra-dot Coulomb interactions between electrons and the number of dots on the thermopower () and the thermoelectric figure of merit (ZT) of the considered transport junction within the Coulomb blockade regime. We show that a strong enhancement of the bothand ZT may occur when the chemical potential of electrodes is situated within the Coulomb gap in the electron transmission spectrum thus indicating a possibility of significant increase of the efficiency of heat-to-electric energy conversion. The enhancement becomes more pronounced when the number of dots increases.
在本工作中，我们从理论上研究了串联配置的多个量子点与非磁性导电电极耦合时的塞贝克效应。我们关注库仑阻塞 regime 内电子之间的点内库仑相互作用以及量子点数量对所考虑的传输结的热电势（）和热电优值（ZT）的综合影响。我们表明，当电极的化学势位于电子传输谱中的库仑间隙内时， 和 ZT 可能会大幅增强，这表明热到电能转换效率显著提高的可能性。当量子点数量增加时，这种增强变得更加明显。
