Thermopower of few-electron quantum dots with Kondo correlations
Abstract
The thermopower of few-electron quantum dots with Kondo correlations is investigated via a hierarchial equations of motion approach. The thermopower is determined by the line shape of spectral function within a narrow energy window defined by temperature. Based on calculations and analyses on single-level and two-level Anderson impurity models, the underlying relations between thermopower and various types of electron correlations are elaborated. In particular, an unconventional sign reversal behavior is predicted for quantum dots with a suitable inter-level spacing. The new feature highlights the significance of multi-level effects and their interplay with Kondo correlations. Our finding and understanding may lead to novel thermoelectric applications of quantum dots.
Keywords
Cite
@article{arxiv.1306.4946,
title = {Thermopower of few-electron quantum dots with Kondo correlations},
author = {LvZhou Ye and Dong Hou and Rulin Wang and Xiao Zheng and YiJing Yan},
journal= {arXiv preprint arXiv:1306.4946},
year = {2015}
}
Comments
5 pages, 4 figures