Formation of Fe Cluster Superlattice in a Metal-Organic Quantum-Box Network
Formation of Fe Cluster Superlattice in a Metal-Organic Quantum-Box Network
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DOI：
10.1103/physrevlett.110.086102
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发表时间：
2013-02-19
影响因子：
8.6
通讯作者：
Brune, Harald
中科院分区：
文献类型：
--
作者：
Pivetta, Marina;Pacchioni, Giulia E.;Brune, Harald
我们报道了Fe吸附原子在Cu（111）表面上的自组装，该表面由金属有机蜂窝网络图案化，由二腈五苯基分子与Cu吸附原子配位形成。落在金属表面上的Fe原子是移动的，并被表面态电子的量子限制引导到网络六边形腔的中心。在容纳一个以上的Fe的空腔中，观察到优先原子间距离。经过温和退火后，每个六边形中的吸附原子聚集成一个簇。这些簇再次集中在空腔中，它们的大小通过它们独特的表观高度来辨别。DOI：10.1103/PhysRevLett.110.086102
We report on the self-assembly of Fe adatoms on a Cu(111) surface that is patterned by a metal-organic honeycomb network, formed by coordination of dicarbonitrile pentaphenyl molecules with Cu adatoms. Fe atoms landing on the metal surface are mobile and steered by the quantum confinement of the surface state electrons towards the center of the network hexagonal cavities. In cavities hosting more than one Fe, preferential interatomic distances are observed. The adatoms in each hexagon aggregate into a single cluster upon gentle annealing. These clusters are again centered in the cavities and their size is discerned by their distinct apparent heights. DOI: 10.1103/PhysRevLett.110.086102