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

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

2007-09-18

arxiv.org/abs/0709.2796v1

Physics

Condensed Matter

Materials Science

9 pages, 8 figures

Scientific paper

10.1103/PhysRevB.77.085422

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.

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