Unoccupied states of individual silver clusters and chains on Ag(111)

Abstract

Size-selected silver clusters on Ag(111) were fabricated with the tip of a scanning tunneling microscope. Unoccupied electron resonances give rise to image contrast and spectral features which shift toward the Fermi level with increasing cluster size. Linear assemblies exhibit higher resonance energies than equally sized compact assemblies. Density functional theory calculations reproduce the observed energies and enable an assignment of the resonances to hybridized atomic 5s and 5p orbitals with silver substrate states.

arXiv comment9 pages, 8 figures

References in corpus (4)

• Density-functional theory calculations for poly-atomic systems: Electronic structure, static and elastic properties and ab initio molecular dynamics
• Atom Transfer and Single-Adatom Contacts
• Pseudopotential study of binding properties of solids within generalized gradient approximations: The role of core-valence exchange-correlation
• Site determination and thermally assisted tunneling in homogenous nucleation

Cited by in corpus (6)

• Designer quantum states of matter created atom-by-atom
• Light Emission from Ag(111) driven by Inelastic Tunneling in the Field Emission Regime
• Evolution of unoccupied resonance during the synthesis of a silver dimer on Ag(111)
• Channel saturation and conductance quantization in single-atom gold constrictions
• The electrostatic potential of atomic nanostructures on a metal surface
• Statistical analysis of electron-induced switching of a spin-crossover complex