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Electrostatic confinement of electrons in graphene nanoribbons

机译:石墨烯纳米带中电子的静电限制

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摘要

Coulomb blockade is observed in a graphene nanoribbon device with a top gate. When two pn junctions are formed via the back gate and the local top gate, electrons are confined between the pn junctions which act as the barriers. When no pn junctions are induced by the gate voltages, electrons are still confined, as a result of strong disorder, but in a larger area. Measurements on five other devices with different dimensions yield consistent results.
机译:在具有顶栅的石墨烯纳米带装置中观察到库仑阻塞。当通过背栅和局部顶栅形成两个pn结时,电子被限制在作为势垒的pn结之间。当栅极电压没有感应到pn结时,由于强烈的无序性,电子仍被限制在更大的面积内。在其他五个具有不同尺寸的设备上进行的测量可得出一致的结果。

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