An Algorithm for Subtraction of Doublet Emission Lines in Angle-Resolved Photoemission Spectroscopy
| Autor: | Yaoju Tarn, Mekhola Sinha, Christopher Pasco, Darrell G. Schlom, Tyrel M. McQueen, Kyle M. Shen, Brendan D. Faeth |
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| Rok vydání: | 2023 |
| Předmět: |
Plasma Physics (physics.plasm-ph)
Condensed Matter - Materials Science Radiation Physics - Instrumentation and Detectors Materials Science (cond-mat.mtrl-sci) FOS: Physical sciences Instrumentation and Detectors (physics.ins-det) Physical and Theoretical Chemistry Condensed Matter Physics Spectroscopy Atomic and Molecular Physics and Optics Physics - Plasma Physics Electronic Optical and Magnetic Materials |
| DOI: | 10.48550/arxiv.2303.07531 |
| Popis: | Plasma discharge lamps are widely utilized in the practice of angle-resolved photoemission spectroscopy (ARPES) experiments as narrow-linewidth ultraviolet photon sources. However, many emission lines such as Ar-I, Ne-I, and Ne-II have closely spaced doublet emission lines, which result in superimposed replica on the measured ARPES spectra. Here, we present a simple method for subtracting the contribution of these doublet emission lines from photoemission spectra. Benchmarking against ARPES spectra of well-characterized 2D materials, we demonstrate that this algorithm manages to subtract the doublet signal and reproduce the key features of the monochromated He-I$\alpha$ spectra in a physically sound manner that reliably reproduces quantifiable dispersion relations and quasiparticle lifetimes. Comment: 8 pages, 4 main figures, 3 appendix figures |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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