Physical properties, exciton analysis, and visualization of core-excited states: an intermediate state representation approach
The theoretical simulation of X-ray absorption spectra is in general a challenging task. However, for small and medium-sized organic molecules, the algebraic diagrammatic construction scheme (ADC) for the polarization operator in combination with the core-valence separation approximation (CVS) has p...
Gespeichert in:
| Hauptverfasser: | , |
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| Dokumenttyp: | Article (Journal) |
| Sprache: | Englisch |
| Veröffentlicht: |
February 4, 2016
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| In: |
Journal of chemical theory and computation
Year: 2016, Jahrgang: 12, Heft: 3, Pages: 1314-1330 |
| ISSN: | 1549-9626 |
| DOI: | 10.1021/acs.jctc.5b01161 |
| Online-Zugang: | Verlag, Volltext: http://dx.doi.org/10.1021/acs.jctc.5b01161
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| Verfasserangaben: | Jan Wenzel and Andreas Dreuw |
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| 520 | |a The theoretical simulation of X-ray absorption spectra is in general a challenging task. However, for small and medium-sized organic molecules, the algebraic diagrammatic construction scheme (ADC) for the polarization operator in combination with the core-valence separation approximation (CVS) has proven to yield core-excitation energies and transition moments with almost quantitative accuracy allowing for reliable construction of X-ray absorption spectra. Still, to understand core-excitation processes in detail, it is not sufficient to only compute energies, but also properties like static dipole moments and state densities are important as they provide deeper insight into the nature of core-excited states. Here, we present for the first time an implementation of the intermediate state representation (ISR) approach in combination with the CVS approximation (CVS-ISR), which gives, in combination with the CVS-ADC method, direct access to core-excited state properties. | ||
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