Bulletin of the American Physical Society
APS March Meeting 2020
Volume 65, Number 1
Monday–Friday, March 2–6, 2020; Denver, Colorado
Session U52: Surfaces and Thin Films of Novel Electronic Materials
2:30 PM–5:18 PM,
Thursday, March 5, 2020
Room: Mile High Ballroom 1E
Sponsoring
Unit:
DCMP
Chair: Daniel Dougherty, North Carolina State University
Abstract: U52.00012 : Surface structure determination of a two dimensional Au-Si-alloy formed on Au(110) by x-ray photoelectron spectroscopy (XPS) and x-ray photoelectron diffraction (XPD)*
Presenter:
Marie Schmitz
(TU Dortmund University)
Authors:
Marie Schmitz
(TU Dortmund University)
Peter Roese
(TU Dortmund University)
Malte Schulte
(TU Dortmund University)
Carsten Westphal
(TU Dortmund University)
Collaboration:
DELTA TU Dortmund
A detailed structural as well as chemical investigation was performed by means of low energy electron diffraction (LEED), x-ray photoelectron spectroscopy (XPS), and x-ray photoelectron diffraction (XPD). High-resolution core-level-spectra of Au4f and Si2p reveal multiple chemically shifted components. Both Au4f and Si2p XPD-patterns were simulated with the EDAC[2] and MSPHD[3] packages, respectively, and compared with the measured pattern by a genetic algorithm reaching R-factors around 0.1. Therefore, we propose a surface-structure model for the Au-Si-alloy based on our measurements and simulations. The results are set in the context of an previously proposed surface-structure of the Au-Si-alloy via LEED, STM, and DFT by Enriquez et al.[4] .
1. M.J.S. Spencer, et al. Springer 235, 103-105. (2016)
2. R. Gunella, et al. Comp. Phys. Comm. 132 (3), 251–266. (2000)
3. F.J.G. de Abajo, et al. Phys. Rev. B. 63, 1–16. (2001)
4. H. Enriquez, et al. Appl. Phys. Lett., 101, 1–6. (2012)
*The authors are grateful for financial support by the Land Nordrhein-Westfalen.
Follow Us |
Engage
Become an APS Member |
My APS
Renew Membership |
Information for |
About APSThe American Physical Society (APS) is a non-profit membership organization working to advance the knowledge of physics. |
© 2025 American Physical Society
| All rights reserved | Terms of Use
| Contact Us
Headquarters
1 Physics Ellipse, College Park, MD 20740-3844
(301) 209-3200
Editorial Office
100 Motor Pkwy, Suite 110, Hauppauge, NY 11788
(631) 591-4000
Office of Public Affairs
529 14th St NW, Suite 1050, Washington, D.C. 20045-2001
(202) 662-8700