Dynamics of a nanoscale rotor driven by single-electron tunneling
Dynamics of a nanoscale rotor driven by single-electron tunneling
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DOI：
10.1209/0295-5075/98/68004
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发表时间：
2012-06-01
期刊：
影响因子：
1.8
通讯作者：
Eisfeld, Alexander
中科院分区：
文献类型：
--
作者：
Croy, Alexander;Eisfeld, Alexander
我们从理论上研究了棒状纳米级转子的动力学和电荷输运特性，该转子的驱动机制与纳米机械单电子晶体管(NEMSET)相似。我们发现，静态电势梯度可以导致振荡或连续旋转运动的自激。我们识别了器件的相关参数，并研究了动力学对这些参数的依赖关系。我们讨论了动力学与通过该装置的测量电流之间的关系。值得注意的是，在振荡区域，我们发现了负的微分电导。电流-电压特性可以用来推断周围环境的细节，这是导致减振的原因。版权所有(C)Epla，2012
We investigate theoretically the dynamics and the charge transport properties of a rod-shaped nanoscale rotor, which is driven by a similar mechanism as the nanomechanical single-electron transistor (NEMSET). We show that a static electric potential gradient can lead to self-excitation of oscillatory or continuous rotational motion. We identify the relevant parameters of the device and study the dependence of the dynamics on these parameters. We discuss how the dynamics are related to the measured current through the device. Notably, in the oscillatory regime we find a negative differential conductance. The current-voltage characteristics can be used to infer details of the surrounding environment which is responsible for damping. Copyright (C) EPLA, 2012