Formation of Fe Cluster Superlattice in a Metal-Organic Quantum-Box Network

Marina Pivetta, Giulia E. Pacchioni, Uta Schlickum, Johannes V. Barth, Harald Brune
2013 Physical Review Letters  
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
more » ... 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 pmid:23473168 fatcat:wgmkdxicznefpi3ywwtyjckism