Current-driven dynamics in molecular-scale devices
Current-driven dynamics in molecular-scale devices
复制标题
分子尺度器件中的电流驱动动力学
DOI：
10.1088/0953-8984/15/14/201
复制
发表时间：
2003
期刊：
影响因子：
--
通讯作者：
T. Seideman
中科院分区：
文献类型：
--
作者：
T. Seideman
我们回顾了最近关于分子尺度器件中电流触发过程的理论工作--这是固态物理学和化学动力学之间的界面领域，在不同领域具有潜在应用，包括人工分子机器、单分子传输、表面纳米化学和纳米光刻。电流触发动力学的定性物理基础进行了讨论，并放置在几个良好的研究与它共享方面的现象的背景下。这些动力学建模的理论是未来制定内的时间依赖性散射的方法。我们的最终结果提供了有用的洞察系统的属性，确定的反应结果，以及计算方便的框架数值实现。该理论被应用于研究单分子表面反应诱导的扫描隧道显微镜和电流触发的单分子晶体管的动力学。最后，我们讨论了电流诱导动力学在分子器件中的几个潜在应用以及未来研究的几个机会。
We review recent theoretical work on current-triggered processes in molecular-scale devices—a field at the interface between solid state physics and chemical dynamics with potential applications in diverse areas, including artificial molecular machines, unimolecular transport, surface nanochemistry and nanolithography. The qualitative physics underlying current-triggered dynamics is first discussed and placed in context with several well-studied phenomena with which it shares aspects. A theory for modelling these dynamics is next formulated within a time-dependent scattering approach. Our end result provides useful insight into the system properties that determine the reaction outcome as well as a computationally convenient framework for numerical realization. The theory is applied to study single-molecule surface reactions induced by a scanning tunnelling microscope and current-triggered dynamics in single-molecule transistors. We close with a discussion of several potential applications of current-induced dynamics in molecular devices and several opportunities for future research.