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Condensed Matter > Materials Science

arXiv:2201.04172 (cond-mat)
[Submitted on 11 Jan 2022]

Title:Site-specific surface atom valence band structure via X-ray standing wave excited photoemission

Authors:Yanna Chen, Leighton O. Jones, Tien-Lin Lee, Anusheela Das, Martin A. Mosquera, Denis T. Keane, George C. Schatz, Michael J. Bedzyk
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Abstract:X-ray standing wave (XSW) excited photoelectron emission was used to measure the site-specific valence band (VB) for 1/2 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 an fcc-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 work represents a novel method for determining the contribution to the density of states by valence electrons from specific atomic surface sites.
Subjects: Materials Science (cond-mat.mtrl-sci)
Cite as: arXiv:2201.04172 [cond-mat.mtrl-sci]
  (or arXiv:2201.04172v1 [cond-mat.mtrl-sci] for this version)
  https://doi.org/10.48550/arXiv.2201.04172
Related DOI: https://doi.org/10.1103/PhysRevLett.128.206801

Submission history

From: Michael Bedzyk [view email]
[v1] Tue, 11 Jan 2022 19:46:03 UTC (5,248 KB)
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