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arXiv 1204.2162cond-mat.mes-hall
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双量子点系统的声子辅助隧穿

Phonon-assisted tunneling through a double quantum dot system

M. Bagheri Tagani, H. Rahimpour Soleimani

摘要:

研究了电子在双量子点系统中的输运问题。采用Keldysh非平衡格林函数方法计算了系统的电流和传输系数。分析了电子-声子相互作用、点间隧穿和温度对态密度和电流的影响。结果表明,虽然电子-声子相互作用导致电导在低温下出现侧峰,但在高温下这些侧峰消失。

英文摘要:

Electron transport through a double quantum dot system is studied with taking into account electron-phonon interaction. The Keldysh nonequilibrium Green function formalism is used to compute the current and transmission coefficient of the system. The influence of the electron-phonon interaction, interdot tunneling, and temperature on the density of states and current is analyzed. Results show that although the electron-phonon interaction results in the appearance of side peaks in the conductance at low temperatures, they are disappeared in high temperatures.

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。

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