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A comparison of dynamic atomic force microscope set-ups for performing atomic scale manipulation experiments

机译：动态原子力显微镜设置进行原子尺度操作实验的比较

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摘要

We present the results of calculations performed to investigate the process of single-atom manipulation with the non-contact atomic force microscope comparing the two most common experimental set-ups: a conventional large amplitude silicon cantilever and a small amplitude quartz tuning fork. The manipulation of a model system-an oxygen vacancy in the MgO(001) surface by a single vertical approach at a fixed lateral position-is simulated for each set-up using a detailed and realistic atomistic model that accounts for temperature and the tip trajectory, and it is found that both approaches produce the manipulation event in approximately the same way. The behaviour of the tip dynamics and the resulting response of the instrumentation to the manipulation event is studied using a virtual dynamic atomic force microscope that includes a realistic description of noise for each type of set-up. The results of these calculations indicate how a single-atom manipulation can be performed and recognized by each type of experiment.
机译：我们介绍了通过非接触式原子力显微镜研究单原子操作过程的计算结果，比较了两个最常见的实验装置：传统的大振幅硅悬臂梁和小振幅石英音叉。使用详细而真实的原子模型（包括温度和尖端轨迹）对每种设置模拟模型系统的操作-在固定的横向位置通过单个垂直方法在MgO（001）表面中的氧空位，并且发现两种方法都以大致相同的方式产生操纵事件。使用虚拟动态原子力显微镜研究了尖端动力学的行为以及仪器对操纵事件的响应，该虚拟动力学原子力显微镜包括每种设置类型的噪声的真实描述。这些计算的结果表明了每种类型的实验如何执行和识别单原子操作。

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