Lisanne Sellies, Jakob Eckrich, et al.
Nature Nanotechnology
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.
Lisanne Sellies, Jakob Eckrich, et al.
Nature Nanotechnology
Jascha Repp, Gerhard Meyer, et al.
Science
Jascha Repp, Peter Liljeroth, et al.
Nature Physics
Wolfram Steurer, Jascha Repp, et al.
Physical Review Letters