Department of Physics, Budapest University of Technology and Economics, Budapest, Hungary.
Phys Rev Lett. 2010 Dec 31;105(26):266805. doi: 10.1103/PhysRevLett.105.266805. Epub 2010 Dec 29.
We present a novel statistical method for the study of stable atomic configurations in breaking nanowires based on the 2D cross-correlation analysis of conductance versus electrode separation traces. Applying this method, we can clearly resolve the typical evolutions of the conductance staircase in some transition metal nanojunctions (Ni, Fe, V) up to high conductance values. In these metals our analysis demonstrates a very well ordered atomic narrowing of the nanowire, indicating a very regular, stepwise decrease of the number of atoms in the minimal cross section of the junction, in contrast to the majority of the metals. All these features are hidden in traditional conductance histograms.
我们提出了一种新的统计方法，用于研究基于二维交叉相关分析的断裂纳米线中的稳定原子构型，该方法用于研究基于二维交叉相关分析的断裂纳米线中的稳定原子构型。通过这种方法，我们可以清楚地分辨出某些过渡金属纳米结（Ni、Fe、V）中导纳阶梯的典型演化，直至达到较高的导纳值。在这些金属中，我们的分析表明纳米线的原子非常有序地变窄，这表明在结的最小横截面上的原子数量呈非常规则的、逐步减少的趋势，与大多数金属形成鲜明对比。所有这些特征都隐藏在传统的电导直方图中。
