原始磷分子中的非常规应变电导振荡
Unconventional Strain-Dependent Conductance Oscillations in Pristine Phosphorene
摘要：
磷烯是一种单元素二维半导体，已迅速成为晶体管和光电子器件的高迁移率材料。此外，作为一种2D材料，它可以承受高水平的应变，从而能够对其电子特性进行敏感的修改。本文研究了磷烯纳米晶体的应变相关电学性质。进行广泛的计算，我们确定电导作为单轴和双轴应变刺激的函数，并揭示了一个独特的区域相图。这使我们能够通过简单的应变应用首次发现原始磷烯中的电导振荡。我们表明，这种非常规的电流-电压的行为是如何可调的应变的性质，以及如何额外的栅极电压可以调制所观察到的现象和开关效率的振幅（峰谷比）。此外，我们表明，开关是非常强大的对掺杂和缺陷。我们详细的研究结果提出了新的领导创新的应变为基础的计量和高频纳米电子开关的磷烯。
英文摘要：
Phosphorene is a single elemental two-dimensional semiconductor that has quickly emerged as a high mobility material for transistors and optoelectronic devices. In addition, being a 2D material, it can sustain high levels of strain, enabling sensitive modification of its electronic properties. In this paper, we investigate the strain dependent electrical properties of phosphorene nanocrystals. Performing extensive calculations we determine electrical conductance as a function uniaxial as well as biaxial strain stimulus, and uncover a unique zone phase diagram. This enables us to uncover for the first time conductance oscillations in pristine phopshorene, by simple application of strain. We show that how such unconventional current-voltage behaviour is tuneable by the nature of strain, and how an additional gate voltage can modulate amplitude (peak to valley ratio) of the observed phenomena and its switching efficiency. Furthermore, we show that the switching is highly robust against doping and defects. Our detailed results present new leads for innovations in strain based gauging and high-frequency nanoelectronic switches of phosphorene.
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