论文标题
“水下”分子连接处的噪声和热力学不确定性关系
Noise and Thermodynamic Uncertainty Relation in "Underwater" Molecular Junctions
论文作者
论文摘要
我们确定嵌入热环境中的金属 - 分子金属连接中的零频电荷电流噪声，例如，溶剂，由经典主方程描述的顺序电荷传输主导，并研究了其对特定模型参数的依赖性，即环境重新组织能量和放松行为。有趣的是，经典电流噪声项与其量子类似物具有相同的结构，该结构反映了由于桥接分子而引起的电荷相关性。我们进一步确定了热力学不确定性关系（TUR），该关系定义了Marcus策略中电化学交界处的平均电荷电流，其波动和熵产生之间的关系。在第二部分中，我们使用相同的方法来计算当前的噪声和tur的原型光伏电池，以预测其上限，以将能量转化为有用的工作效率。
We determine the zero-frequency charge current noise in a metal-molecule-metal junction embedded in a thermal environment, e.g., a solvent, dominated by sequential charge transmission described by a classical master equation, and study its dependence of specific model parameters, i.e., the environmental reorganization energy and relaxation behavior. Interestingly, the classical current noise term has the same structure as its quantum analog which reflects a charge correlation due to the bridging molecule. We further determine the thermodynamic uncertainty relation (TUR) which defines a bound on the relationship between the average charge current, its fluctuation and the entropy production in an electrochemical junction in the Marcus regime. In a second part, we use the same methodology to calculate the current noise and the TUR for a protoype photovoltaic cell in order to predict its upper bound for the efficiency of energy conversion into useful work.
