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Spin-Dependent Electron Transport Along a Molecular Wire in a Metal (Probe)-Vacuum-Molecule-Metal System: The Effect of the Size and the Shape of the Probe Tip

机译:沿金属(探针) - 诸如诸如探针 - 分子 - 金属系统中的分子线的旋转依赖电子传输:尺寸和探头尖端的形状的效果

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We present the results of a first-principles quantum mechanical study of spin-dependent electron transport along a molecular wire investigating the effects of the size and the shape of the probe tip on the tunneling current. A periodic, gradient-corrected density functional method together with Bardeen, Tersoff and Hamann formalism is employed in this study. The electron tunneling through a self-assembled monolayer of benzene 1,4-dithiol on the Ni(111) substrate is found to be strongly dependent on both shape and size of the probe tip.
机译:我们展示了沿着调查探针尖端尺寸和探针尖端的形状在隧道电流上的旋转依赖电子传输的第一原理量子力学研究的结果。本研究采用周期性,梯度校正的密度泛函法,与BARDEEN,TERSOFF和HAMANN形式主义一起使用。发现通过在Ni(111)衬底上的自组装单层的苯1,4-二硫醇的电子隧穿强烈地取决于探针尖端的两种形状和尺寸。

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