Abstract
The accuracy of core excitation energies and core electron binding energies computed within a Δself-consistent-field framework is assessed. The variational collapse of the core excited state is prevented by maintaining a singly occupied core orbital using an overlap criterion called the maximum overlap method. When applied to a wide range of small organic molecules, the resulting core excitation energies are not systematically underestimated as observed in time-dependent density functional theory and agree well with experiment. The accuracy of this approach for core excited states is illustrated by the calculation of the pre-edge features in x-ray absorption spectra of plastocyanin, which shows that accurate results can be achieved with Δself-consistent-field calculations when used in conjunction with uncontracted basis functions.
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Dates
Type | When |
---|---|
Created | 16 years, 5 months ago (March 26, 2009, 6:20 p.m.) |
Deposited | 2 years, 2 months ago (June 19, 2023, 4:22 p.m.) |
Indexed | 2 days, 5 hours ago (Sept. 4, 2025, 9:33 a.m.) |
Issued | 16 years, 5 months ago (March 25, 2009) |
Published | 16 years, 5 months ago (March 25, 2009) |
Published Online | 16 years, 5 months ago (March 25, 2009) |
Published Print | 16 years, 5 months ago (March 28, 2009) |
@article{Besley_2009, title={Self-consistent-field calculations of core excited states}, volume={130}, ISSN={1089-7690}, url={http://dx.doi.org/10.1063/1.3092928}, DOI={10.1063/1.3092928}, number={12}, journal={The Journal of Chemical Physics}, publisher={AIP Publishing}, author={Besley, Nicholas A. and Gilbert, Andrew T. B. and Gill, Peter M. W.}, year={2009}, month=mar }