Excited state spectroscopy in carbon nanotube double quantum dots.
Excited state spectroscopy in carbon nanotube double quantum dots.
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DOI：
10.1021/nl052498e
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发表时间：
2006-02
期刊：
影响因子：
10.8
通讯作者：
S. Sapmaz;C. Meyer;Piotr Beliczynski;P. Jarillo-Herrero;L. Kouwenhoven
中科院分区：
文献类型：
--
作者：
S. Sapmaz;C. Meyer;Piotr Beliczynski;P. Jarillo-Herrero;L. Kouwenhoven
我们报告了完全可调的碳纳米管双量子点的低温测量结果。一种新的制造技术已被用于顶栅，以避免覆盖整个纳米管的氧化物层，如在以前的实验。顶门允许我们形成单个点并控制它们之间的耦合，并且我们观察到4重壳填充。我们通过双量子点中的激发态进行非弹性输运光谱，这是实现新的基于微波的实验的必要步骤。
We report on low-temperature measurements in a fully tunable carbon nanotube double quantum dot. A new fabrication technique has been used for the top-gates in order to avoid covering the whole nanotube with an oxide layer as in previous experiments. The top-gates allow us to form single dots and control the coupling between them, and we observe 4-fold shell filling. We perform inelastic transport spectroscopy via the excited states in the double quantum dot, a necessary step toward the implementation of new microwave-based experiments.