Model study of adsorbed metallic quantum dots: Na on Cu(111

T. Torsti, V. Lindberg, M.J. Puska, B. Hellsing

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Abstract

We model electronic properties of the second-monolayer Na adatom islands (quantum dots) on the Cu(111) surface covered homogeneously by the first Na monolayer. An axially symmetric three-dimensional jellium model, taking into account the effects due to the first Na monolayer and the Cu substrate, has been developed. The electronic structure is solved within the local-density approximation of the density-functional theory using a real-space multigrid method. The model enables the study of systems consisting of thousands of Na atoms. The results for the local density of states are compared with differential conductance (dI/dV) spectra and constant current topographs from scanning tunneling microscopy.
Original languageEnglish
Article number235420
Pages (from-to)1-10
Number of pages10
JournalPhysical Review B
Volume66
Issue number23
DOIs
Publication statusPublished - 30 Dec 2002
MoE publication typeA1 Journal article-refereed

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