Strengths of plasmon satellites in XPS: Real-time cumulant approach
Journal Article
·
· Journal of Vacuum Science and Technology A
- University of Washington, Seattle, WA (United States); SLAC National Accelerator Laboratory (SLAC), Menlo Park, CA (United States); University of Washington
- University of Washington, Seattle, WA (United States)
Plasmon satellites observed in x-ray photoemission spectra (XPS) reflect many-body effects beyond the single-electron approximation. However, theoretical calculations are challenging and simplified theories based on electron gas models are not always satisfactory. Here, a cumulant Green’s function approach with a real-time time-dependent density functional theory calculation of the cumulant is described for calculations of these effects, without the need for adjustable parameters. Here, the approach yields good agreement with experimental XPS results, as illustrated for Ge and Al. Corrections due to extrinsic losses and interference are also briefly discussed.
- Research Organization:
- University of Washington, Seattle, WA (United States)
- Sponsoring Organization:
- USDOE Office of Science (SC), Basic Energy Sciences (BES). Materials Sciences & Engineering Division (MSE)
- Grant/Contract Number:
- AC02-76SF00515; FG02-97ER45623
- OSTI ID:
- 1975534
- Journal Information:
- Journal of Vacuum Science and Technology A, Journal Name: Journal of Vacuum Science and Technology A Journal Issue: 6 Vol. 39; ISSN 0734-2101
- Publisher:
- American Vacuum Society / AIPCopyright Statement
- Country of Publication:
- United States
- Language:
- English
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