通过可逆接触重构的可独立切换的原子量子晶体管
Independently switchable atomic quantum transistors by reversible contact reconstruction
摘要：
迄今为止，可主动切换的原子级器件（特别是晶体管）的受控制造仍然难以捉摸。在这里，我们解释了一个原子级的三端设备的操作通过一个新的开关机制的电，自稳定重建的电极接触在原子水平：虽然该设备是由电化学沉积制造，它完全操作的基础上的机械效应的固液界面。我们在实验和原子模拟中分析了机械和热稳定的金属结，预定义的量子化电导为1- 5G_0。结构和电导特性的原子模型阐明了作为设备的基本机制的双电极重构。两个晶体管在低电压下的独立室温操作展示了原子尺度上量子电子学和逻辑学的有趣前景。
英文摘要：
The controlled fabrication of actively switchable atomic-scale devices, in particular transistors, has remained elusive to date. Here we explain operation of an atomic-scale three-terminal device by a novel switching mechanism of bistable, self-stabilizing reconstruction of the electrode contacts at the atomic level: While the device is manufactured by electrochemical deposition, it operates entirely on the basis of mechanical effects of the solid-liquid interface. We analyze mechanically and thermally stable metallic junctions with a predefined quantized conductance of 1-5 G_0 in experiment and atomistic simulation. Atomistic modeling of structural and conductance properties elucidates bistable electrode reconstruction as the underlying mechanism of the device. Independent room-temperature operation of two transistors at low voltage demonstrates intriguing perspectives for quantum electronics and logics on the atomic scale.
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