Atomic-Site-Specific Surface Valence-Band Structure from X-Ray Standing-Wave Excited Photoemission

Yanna Chen, Leighton O. Jones, Tien Lin Lee, Anusheela Das, Martín A. Mosquera, Denis T Keane, George C. Schatz, Michael J. Bedzyk*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review


X-ray standing-wave (XSW) excited photoelectron emission was used to measure the site-specific valence band (VB) for ½ monolayer (ML) Pt grown on a SrTiO3 (001) surface. The XSW induced modulations in the core level (CL), and VB photoemission from the surface and substrate atoms were monitored for three hkl substrate Bragg reflections. The XSW CL analysis shows the Pt to have a face-centered-cubic-like cube-on-cube epitaxy with the substrate. The XSW VB information compares well to a density functional theory calculated projected density of states from the surface and substrate atoms. Overall, this Letter represents a novel method for determining the contribution to the density of states by valence electrons from specific atomic surface sites.

Original languageEnglish (US)
Article number206801
JournalPhysical review letters
Issue number20
StatePublished - May 20 2022

ASJC Scopus subject areas

  • Physics and Astronomy(all)


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