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

Research output: Contribution to journalArticleScientificpeer-review


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

Research units

  • CSC - IT Center for Science Ltd.
  • Vaxjo universitet
  • Chalmers University of Technology
  • University of Gothenburg


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
Issue number23
Publication statusPublished - 30 Dec 2002
MoE publication typeA1 Journal article-refereed

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