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American Physical Society, Physical Review Letters, 2(106), 2011

DOI: 10.1103/physrevlett.106.026802

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Tunable Quantum Dot Arrays Formed from Self-Assembled Metal-Organic Networks

Journal article published in 2011 by F. Klappenberger, D. Kühne, W. Krenner, I. Silanes, A. Arnau, F. J. García de Abajo, S. Klyatskaya, M. Ruben ORCID, J. V. Barth ORCID
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This paper is available in a repository.

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Abstract

The confinement of Ag(111) surface-state electrons by self-assembled, nanoporous metal-organic networks is studied using low-temperature scanning tunneling microscopy and spectroscopy as well as electronic structure calculations. The honeycomb networks of Co metal centers and dicarbonitrile-oligophenyl linkers induce surface resonance states confined in the cavities with a tunable energy level alignment. We find that electron scattering is repulsive on the molecules and weakly attractive on Co. The tailored networks represent periodic arrays of uniform and coupled quantum dots.