Quantification of Ni L2,3 core-hole relaxation pathways utilizing Auger photoelectron coincidence spectroscopy
| Autor: | Svante Svensson, Artur Born, Torsten Leitner, Ruslan Ovsyannikov, Nils Mårtensson, Ieva Bidermane, Alexander Föhlisch |
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| Rok vydání: | 2021 |
| Předmět: |
Physics
Valence (chemistry) Electronic correlation Relaxation (NMR) 02 engineering and technology Photoelectric effect 021001 nanoscience & nanotechnology 01 natural sciences Spectral line Auger Delocalized electron 0103 physical sciences Atomic physics 010306 general physics 0210 nano-technology Spectroscopy |
| Zdroj: | Physical Review B. 103 |
| ISSN: | 2469-9969 2469-9950 |
| Popis: | Ni $LVV$ Auger spectra, in coincidence with the corresponding $2{p}_{1/2}$, $2{p}_{3/2}$, and $6\phantom{\rule{0.28em}{0ex}}\text{eV}$ satellite photoelectrons, have been used to examine electron correlation and itinerance effects in Ni. In coincidence with the $2{p}_{3/2}$ core level, the Auger spectral shape is represented by localized $3{d}^{8}$ and itinerant valence final states with an additional $3{d}^{7}$ Auger shake-up contribution. The spectra in coincidence with the $6\phantom{\rule{0.28em}{0ex}}\mathrm{eV}$ satellite probe the decay of localized $2{p}^{5}3{d}^{9}$ double hole states, leading to $3{d}^{7}$ final states. It is found that a fraction of the double hole states delocalize before the Auger decay. A similar delocalization is observed for the double hole states produced by the ${L}_{2}{L}_{3}{M}_{45}$ Coster-Kronig process, and the delocalization rates have been determined. |
| Databáze: | OpenAIRE |
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