Fano Effect on the Thermoelectric Efficiency in Parallel-Coupled Double Quantum Dots

被引：0
|
作者：
Jun Zheng
Min-Jun Zhu
Feng Chi
机构：
[1] Chinese Academy of Sciences,State Key Laboratory for Superlattices and Microstructures, Institute of Semiconductors
[2] Bohai University,Department of Physics
[3] Bohai University,Faculty of Engineering
来源：
Journal of Low Temperature Physics | 2012年 / 166卷
关键词：
Thermoelectric effect; Quantum dots; Fano effect;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
With the help of the Green function technique and the equation of motion approach, we study the thermoelectric efficiency (characterized by the figure of merit) in parallel-coupled double quantum dots (QDs) system. It is found that the configurations of the dot-lead coupling strengths exert a significant impact on the figure of merit through the Fano effect, due to which electrons experience an abrupt change from resonant to antiresonant tunneling. The absolute value of the thermopower is increased by the Fano resonance and antiresonance, while the electrical conductance is separately enhanced and suppressed, leading to the enhancement of the thermal efficiency of the device.
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页码：208 / 217
页数：9
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