Model study of adsorbed metallic quantum dots: Na on Cu(111)
arXiv:cond-mat/0209087 · doi:10.1103/PhysRevB.66.235420
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 () spectra and constant current topographs from Scanning Tunneling Microscopy.
10 pages, 8 figures. For better quality figures, download http://www.fyslab.hut.fi/~tto/cylart1.pdf