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arXiv 0912.2229cond-mat.mes-hall
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门控石墨烯双量子点及其激发态光谱

Gate-defined graphene double quantum dot and excited state spectroscopy

Xing Lan Liu, Dorothee Hug, Lieven M. K. Vandersypen

摘要:

双量子点使用三个顶栅形成在石墨烯纳米晶体管器件中。这些门独立地改变每个点上的电子数量并调整点间耦合。通过激发态的输运被观察到在弱耦合双点制度。我们从测量中提取双点系统的所有相关电容,以及量化的电平间距。

英文摘要:

A double quantum dot is formed in a graphene nanoribbon device using three top gates. These gates independently change the number of electrons on each dot and tune the inter-dot coupling. Transport through excited states is observed in the weakly coupled double dot regime. We extract from the measurements all relevant capacitances of the double dot system, as well as the quantized level spacing.

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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