Surface states of a Pd monolayer formed on a Au(111) surface studied by angle-resolved photoemission spectroscopy

Toyoaki Eguchi, A. Kamoshida, M. Ono, M. Hamada, R. Shoda, T. Nishio, A. Harasawa, T. Okuda, T. Kinoshita, Y. Hasegawa

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15 Citations (Scopus)

Abstract

Electronic states of a Pd-deposited (<1 ML) Au(111) surface have been studied using angle-resolved ultraviolet photoemission spectroscopy. A shoulder induced by Pd deposition was observed on a peak assigned to the Shockley surface states of the Au(111) substrate in the spectra measured around the surface normal direction. The photoemission study revealed that the Pd-induced states have parabolic energy dispersion with an effective mass identical to that of the substrate states while its binding energy is 0.17±0.2 eV smaller than the substrate state. It is also found that the binding energy of the Au substrate surface states decreases with Pd deposition. The spectroscopic properties of the Pd-induced states indicate that the states originate from the Au(111) surface states and are modified by the presence of monolayer Pd islands on the substrate.

Original languageEnglish
Article number073403
JournalPhysical Review B - Condensed Matter and Materials Physics
Volume74
Issue number7
DOIs
Publication statusPublished - 2006 Aug 9
Externally publishedYes

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

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    Eguchi, T., Kamoshida, A., Ono, M., Hamada, M., Shoda, R., Nishio, T., Harasawa, A., Okuda, T., Kinoshita, T., & Hasegawa, Y. (2006). Surface states of a Pd monolayer formed on a Au(111) surface studied by angle-resolved photoemission spectroscopy. Physical Review B - Condensed Matter and Materials Physics, 74(7), [073403]. https://doi.org/10.1103/PhysRevB.74.073403