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Exciting core-level spectroscopy

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arxiv 1709.02288 v1 pith:P7DMOYIM submitted 2017-09-07 cond-mat.mtrl-sci

Claudia Draxl , Caterina Cocchi This is my paper · ORCID
classification cond-mat.mtrl-sci
keywords absorptionapproachaddressall-electronanalyzingbethe-salpeterbindingbroad
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We delineate an ab initio approach for obtaining x-ray absorption spectra as provided by many-body perturbation theory, together with its realization within an all-electron framework. Employing the Bethe-Salpeter equation, we address excitations from different absorption edges in a broad range of material classes, analyzing exciton binding strengths and character. We also discuss when the supercell core-hole approach is likely to fail.

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  1. Polarization-Resolved Core Exciton Dynamics in LiF Using Attosecond Transient Absorption Spectroscopy

    cond-mat.mtrl-sci 2025-01 conditional novelty 7.0 of 10

    The 62.5 eV transient absorption feature in LiF is attributed to NIR coupling between the 1s2p bright exciton and an s-like dark exciton, and this coupling is suppressed when the pump and probe polarizations are crossed.

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