Katharina Kaiser, Leonard-Alexander Lieske, et al.
Nature Communications
A combined low-temperature scanning tunneling microscopy and density functional theory study on the binding and diffusion of copper monomers, dimers, and trimers adsorbed on Cu(111) is presented. Whereas atoms in trimers are found in fcc sites only, monomers as well as atoms in dimers can occupy the fcc as well as the metastable hcp site. In fact the dimer fcc-hcp configuration is only 1.3 meV less favorable with respect to the fcc-fcc configuration. This enables a confined intracell dimer motion, which at temperatures below 5 K is dominated by thermally assisted tunneling. © 2003 The American Physical Society.
Katharina Kaiser, Leonard-Alexander Lieske, et al.
Nature Communications
Leo Gross, Fabian Mohn, et al.
Science
Percy Zahl, Martin Bammerlin, et al.
Review of Scientific Instruments
Wolfram Steurer, Bruno Schuler, et al.
Nano Letters