arXivDaily arXiv每日学术速递 周一至周五更新
arXiv周末暂无论文更新,休息一下吧,周末愉快~~
arXiv 1209.2286cond-mat.mes-hall
收藏

二能级分子中声子辅助的thermoelectric effects

Phonon-assisted thermoelectric effects in a two-level molecule

M. Bagheri Tagani, H. Rahimpour Soleimani

摘要:

利用格林函数中的运动方程方法,分析了金属电极上二能级分子的热电性质。结果表明,电导强烈地依赖于电子和声子的温度以及电子-声子耦合强度。此外,还观察到在强的电子-声子相互作用下,电子-空穴对称点处的热导峰消失了。研究还发现,在强的电子-声子相互作用下,优值受到强烈的抑制。也观察到来自库仑相互作用的Wiedemann-Franz定律的违反。

英文摘要:

Thermoelectric properties of a two-level molecule attached to the metallic electrodes are analyzed using the equation of motion technique within the Green function formalism. Results show that the electrical conductance is strongly dependent on the electron and phonon temperatures and the electron-phonon coupling strength. In addition, it is observed that the thermal conductance peaks in the electron-hole symmetry points are vanished in the presence of the strong electron-phonon interaction. It is also found that the figure of merit is strongly suppressed in the strong electron-phonon interaction. The violation of the Wiedemann-Franz law is also observed coming from the Coulomb interactions.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

↑