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arXiv 1205.0127cond-mat.mtrl-scicond-mat.other
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Si(111)-(7 $\times$ 7)表面稳定“环状”Ag团簇的多偏压扫描隧道显微术

Scanning tunneling microscopy at multiple voltage biases of stable "ring-like" Ag clusters on Si(111)-(7$\times$7)

Nicolas Mariotti, Clément Didiot, Eike F Schwier, Claude Monney, Laure-Emmanuelle Perret-Aebi, Corsin Battaglia, Michael G Garnier, Philipp Aebi

摘要:

二十多年来,已知Ag在Si(111)-(7 \times 7)上的沉积在某些条件下导致形成所谓的“环状”簇,其在小簇中特别稳定。为了解决他们仍然未知的原子结构,我们进行了依赖于电压的扫描隧道显微镜(STM)的测量提供有趣的信息与他们的原子结构的电子性质的集群。基于Au团簇在Si(111)-(7 \times 7)上的结构模型和我们的STM图像,我们提出了两个最稳定的Ag“环状”团簇的原子排列。

英文摘要:

Since more than twenty years it is known that deposition of Ag onto Si(111)-(7\times7) leads under certain conditions to the formation of so-called "ring-like" clusters, that are particularly stable among small clusters. In order to resolve their still unknown atomic structure, we performed voltage dependent scanning tunneling microscopy (STM) measurements providing interesting information about the electronic properties of clusters which are linked with their atomic structure. Based on a structural model of Au cluster on Si(111)-(7\times7) and our STM images, we propose an atomic arrangement for the two most stable Ag "ring-like" clusters.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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