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arXiv 0709.3724cond-mat.mes-hallcond-mat.str-el
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长程相互作用对一维纳米粒子输运的影响

Effect of the long-range interaction in transport through one-dimensional nanoparticle arrays

E. Bascones, J. A. Trinidad, V. Estevez, A. H. MacDonald

摘要:

我们分析了长程相互作用对有序和无序一维金属纳米粒子阵列输运性质的影响。我们讨论了阈值电压,I-V曲线和通过阵列的电压降是如何修改的情况下,其中相互作用被限制到放置在同一个岛上的电荷相比。我们表明,这些修改是由于在不同的纳米粒子的电荷之间的有限的相互作用,而其他的是由于在岛和那些在电极上的电荷之间的相互作用,什么产生通过阵列的极化电位下降。我们研究了由于被困在衬底中的电荷杂质的无序势的筛选,发现长程相互作用引入相邻岛屿的无序势之间的相关性。

英文摘要:

We analyze the effect of the long-range interaction on the transport properties through ordered and disordered one-dimensional metallic nanoparticle arrays. We discuss how the threshold voltage, the I-V curves and the voltage drop through the array are modified as compared to the case in which interactions are restricted to charges placed on the same island. We show that some of these modifications are due to finite interactions between charges in different nanoparticles while other ones are due to interactions between charges in the islands and those at the electrodes, what produces a polarization potential drop through the array. We study the screening of the disorder potential due to charges impurities trapped in the substrate and find that long-range interactions introduce correlations between the disorder potentials of neighboring islands.

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