Resonant transport through graphene nanoribbon quantum dots

Yong-Jian Xiong; Bao-Ku Xiong

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Resonant transport through graphene nanoribbon quantum dots

机译：通过石墨烯纳米带量子点的共振传输

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The transport properties of armchair graphene nanoribbons with two structural nanoconstrictions are studied by atomistic simulations. With the appropriate geometry and size, the central region between the two constrictions can behave as a single tunneling quantum dot. Within the low energy range around the Dirac point, the conductance of the structure shows strong resonances that are related to the quasi-bound states localized in the dot. The quasi-bound states are associated with the standing waves confined by the two constrictions, and can be effectively modulated by the geometric parameters of the structure.

机译：通过原子模拟研究了具有两个结构纳米收缩的扶手椅石墨烯纳米带的传输性能。通过适当的几何形状和尺寸，两个颈缩之间的中心区域可以表现为单个隧道量子点。在狄拉克点附近的低能量范围内，结构的电导显示出强共振，这与点中定位的准束缚态有关。准束缚状态与由两个颈缩限制的驻波相关联，并且可以通过结构的几何参数有效地进行调制。

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来源
《Journal of Applied Physics》 |2011年第10期|p.542-546|共5页
作者
Yong-Jian Xiong; Bao-Ku Xiong;
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作者单位

Key Laboratory of Nano Materials of Ningbo, Department of Physics, Ningbo University,Ningbo 315211, China;

College of Physics and Electronic Engineering, Xinyang Normal University, Xinyang 464000, China;

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收录信息美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);
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正文语种 eng
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2. Electronic transport across quantum dots in graphene nanoribbons: Toward built-in gap-tunable metal-semiconductor-metal heterojunctions [J] . Kristians Cernevics, Oleg V. Yazyev, Michele Pizzochero Physical review.B.Condensed matter and materials physics . 2020,第20期

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Resonant transport through graphene nanoribbon quantum dots

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