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Resonant tunneling through S- and U-shaped graphene nanoribbons

机译:通过S和U形石墨烯纳米带的共振隧穿

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摘要

We theoretically investigate resonant tunneling through S- and U-shaped nanostructured graphene nanoribbons. A rich structure of resonant tunneling peaks is found emanating from different quasi-bound states in the middle region. The tunneling current can be turned on and off by varying the Fermi energy. Tunability of resonant tunneling is realized by changing the width of the left and/or right leads and without the use of any external gates.
机译:我们从理论上研究了通过S型和U型纳米结构的石墨烯纳米带的共振隧穿。发现中间区域的不同准束缚态产生了丰富的共振隧穿峰结构。隧道电流可以通过改变费米能量来开启和关闭。谐振隧穿的可调性是通过改变左和/或右引线的宽度而无需使用任何外部栅极来实现的。

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