Thermopower of few-electron quantum dots with Kondo correlations | |
Article | |
关键词: NUMERICAL RENORMALIZATION-GROUP; ANDERSON MODEL; MOLECULAR JUNCTIONS; TRANSPORT; THERMOELECTRICITY; EQUILIBRIUM; TRANSISTOR; | |
DOI : 10.1103/PhysRevB.90.165116 | |
来源: SCIE |
【 摘 要 】
The thermopower of few-electron quantum dots is crucially influenced by on-dot electron-electron interactions, particularly in the presence of Kondo correlations. In this paper, we present a comprehensive picture which elucidates the underlying relations between the thermopower and the spectral density function of two-level quantum dots. The effects of various electronic states, including the Kondo states originating from both spin and orbital degrees of freedom, are clearly unraveled. Such a physical picture is affirmed by accurate numerical data obtained with a hierarchical equations of motion approach. Our findings and understandings provide an effective and viable way to control the thermoelectric properties of strongly correlated quantum dot systems.
【 授权许可】
Free