论文标题
电压控制的二元电导转换金4,4,4'Bipyridine-gold单分子纳米线
Voltage-controlled binary conductance switching in gold-4,4'-bipyridine-gold single-molecule nanowires
论文作者
论文摘要
我们研究了在低温温度下使用机械控制的断裂连接技术（$ t = 4.2 \，\ text {k} $）的金4,4'-Bipyridine-gold单分子连接。我们观察到两种分子结合构型之间的双重概率电导转换，这两种分子结合构型受到机械致动和施加电压的影响。我们证明，两个电导状态的相对优势可以通过电极位移来调谐，而电压操作则诱导两个切换时间的指数加速。对电压可调开关率的详细研究提供了对可能的切换机制的见解。
We investigate gold-4,4'-bipyridine-gold single-molecule junctions with the mechanically controllable break junction technique at cryogenic temperature ($T=4.2\,\text{K}$). We observe bistable probabilistic conductance switching between the two molecular binding configurations, influenced both by the mechanical actuation, and the applied voltage. We demonstrate that the relative dominance of the two conductance states is tunable by the electrode displacement, whereas the voltage manipulation induces an exponential speedup of both switching times. The detailed investigation of the voltage-tunable switching rates provides an insight into the possible switching mechanisms.
