Unoccupied surface state on Pt(111) revealed by scanning tunneling spectroscopy

J. Wiebe, F. Meier, K. Hashimoto, G. Bihlmayer, S. Blügel, P. Ferriani, S. Heinze, R. Wiesendanger

Research output: Contribution to journalArticlepeer-review

44 Citations (Scopus)

Abstract

We measured the dispersion of an unoccupied surface state on Pt(111) by imaging scattering states at point defects and step edges using scanning tunneling spectroscopy. By comparison to first-principles electronic structure calculations the state is assigned to an sp-derived surface band at the lower edge of the projected bulk band gap. In dI/dV(V) curves, the onset of the surface-state band appears as a rather broad feature. Its shape results from two spin-orbit split branches with nearly linear dispersion, one of them merging into bulk states at higher energies.

Original languageEnglish
Article number193406
JournalPhysical Review B - Condensed Matter and Materials Physics
Volume72
Issue number19
DOIs
Publication statusPublished - 2005 Nov 15
Externally publishedYes

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

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