Surface-State Localization at Adatoms

Localization of the Cu111 surface state by single Cu adatoms.

The Cu adatom-induced localization of the two-dimensional Shockley surface state at the Cu(111) surface was identified from experimental and simulated scanning tunneling microscopy spectra. The localization gives rise to a resonance located just below the surface state band edge. The adatom-induced surface state localization is discussed in terms of the existence theorem for bound states in any...

Anisotropic surface-state-mediated RKKY interaction between adatoms

Paul N. Patrone1,2,3,* and T. L. Einstein1,† 1Department of Physics, University of Maryland, College Park, Maryland 20742-4111, USA 2Institute for Research in Electronics and Applied Physics, University of Maryland, College Park, Maryland 20742, USA 3Center for Nanoscale Science and Technology, National Institute of Standards and Technology, Gaithersburg, Maryland 20899, USA (Received 13 Septem...

Surface Diffusion including Adatoms

The aim of this paper is to study continuum models for surface diffusion taking into account free adatoms on the surface, which is of particular importance in the (self-assembled) growth of nanostructures. The extended model yields a coupled system of parabolic differential equations for the surface morphology and the adatom density, involving a cross-diffusion structure. We investigate two dif...

Mechanism of acoustically induced diffusional structuring of surface adatoms

Stabilizing Single Ni Adatoms on a Two-Dimensional Porous Titania Overlayer at the SrTiO3(110) Surface

Nickel vapor-deposited on the SrTiO3(110) surface was studied using scanning tunneling microscopy, photoemission spectroscopy (PES), and density functional theory calculations. This surface forms a (4 × 1) reconstruction, composed of a 2-D titania structure with periodic six- and ten-membered nanopores. Anchored at these nanopores, Ni single adatoms are stabilized at room temperature. PES measu...