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首页> 外文期刊>Journal of Computational Electronics >Electronic signature of single-molecular device based on polyacetylene derivative
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Electronic signature of single-molecular device based on polyacetylene derivative

机译：基于聚乙炔衍生物的单分子器件的电子签名

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摘要

We reported for polyacetylene chains containing N = 6, 10, 20 carbon atoms making bridges with gold electrodes which exhibit linear and nonlinear current/voltage signatures. The non-equilibrium quantum transport calculations are obtained from (1) low-voltage regime of 0-0.1 V and (2) high-voltage regime of 0-1.0 V. The nonlinear current/voltage behavior for high-voltage regime 0-1.0 V suggests that the system can operate as follows: (1) at 0.27 V there is a resonance captured by the I-V plot; (2) from 0.42 to 0.65 V a plateau is reached presenting a field effect transistor behavior; (3) there is a decrease in conductance from 0.66 V, and a negative differential resonance emerges with minimum value of 0.72 V. The linear I-V behavior will be reviewed, and we discuss the destructive quantum interference status. The effect occurs when we analyze the (1) low-voltage regime, and our results show that the conductance in oscillations maximizes the impact of quantum interferences (QI) on the I-V curve. In the present work, we demonstrate that QI in nanowire molecules is intimately related to the topology of the molecule's pi system and establish the existence of QI-induced transmission antiresonances when different voltage regimes are triggered.
机译：我们报道了含有N = 6、10、20个碳原子的聚乙炔链与金电极形成桥，金电极表现出线性和非线性电流/电压信号。非平衡量子输运计算是从（1）0-0.1 V的低压状态和（2）0-1.0 V的高压状态获得的。高压状态0-1.0的非线性电流/电压行为V表示系统可以按以下方式运行：（1）在0.27 V处，IV曲线捕获了一个谐振； （2）在0.42至0.65 V的范围内达到一个平稳状态，呈现出场效应晶体管的特性； （3）电导从0.66 V下降，并且出现负微分谐振，最小值为0.72V。将审查线性I-V行为，并讨论破坏性量子干扰状态。当我们分析（1）低压状态时会产生这种影响，并且我们的结果表明，振荡中的电导使量子干扰（QI）对I-V曲线的影响最大化。在当前的工作中，我们证明了纳米线分子中的QI与分子pi系统的拓扑结构密切相关，并在触发不同的电压方案时确定了QI诱导的传输反共振的存在。

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