Coulomb blockade in graphene quantum dots
Coulomb blockade in graphene quantum dots
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DOI：
10.1142/s0217984913500085
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发表时间：
2009-11
期刊：
影响因子：
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通讯作者：
Q. Ma;T. Tu;Zhirong Lin;Guang-can Guo;G. Guo
中科院分区：
文献类型：
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作者：
Q. Ma;T. Tu;Zhirong Lin;Guang-can Guo;G. Guo
我们研究了石墨烯量子点的电导谱，包括单情况和多情况。研究了单电子隧穿现象，得到了低温下库仑阻塞振荡的周期、幅度和线形。进一步，我们讨论了多个点在阵列中组装时的输运行为，发现了电导谱从单个库仑阻塞到集体库仑阻塞的相变。
We study the conductance spectrum of graphene quantum dots, both single and multiple cases. The single electron tunneling phenomenon is investigated and the periodicity, amplitude and line shape of the Coulomb blockade oscillations at low temperatures are obtained. Further, we discuss the transport behavior when multiple dots are assembled in array and find a phase transition of conductance spectra from individual Coulomb blockade to collective Coulomb blockade.