Long-range electronic interactions at a high temperature: bromine adatom islands on Cu(111).
Long-range electronic interactions between Br adatom islands, which are formed at approximately 600 K, on Cu(111) are mediated by substrate surface-state electrons at that elevated temperature. Using scanning tunneling microscopy at 4 K, we have quantified nearest neighbor island separations and found favored spacings to be half-multiples of the Fermi wavelength of Cu(111). The strong interaction potential and decay length of the interisland interactions are discussed in terms of the interaction of Br with the substrate surface state.
Nanayakkara
Sanjini U
SU
Department of Chemistry, The Pennsylvania State University, 104 Davey Laboratory, University Park, Pennsylvania 16802-6300, USA.
Sykes
E Charles H
EC
Fernández-Torres
Luis C
LC
Blake
Meaghan M
MM
Weiss
Paul S
PS