Universality of extreme-broadening mechanisms in some near-edge x-ray spectra
Extreme broadening previously observed in certain N x-ray fluorescence lines excited near the N K edge in nitrates has been observed in the S L x-ray fluorescence in sodium sulfate, ${\mathrm{Na}}_{2}{\mathrm{SO}}_{4}$. It is explained as a large imaginary self-energy corresponding to an anomalously short lifetime of quasiparticles in one of the valence bands of these compounds. Our latest measurement and the corresponding many-body theory indicate that this is a general effect not specific to nitrates.
Authors
- Rainer Unterumsberger (ORCID: https://orcid.org/0000-0001-8076-1288)
- Adrian Jonas (ORCID: https://orcid.org/0000-0003-1511-5612)
- Terrence Jach
- John Vinson (ORCID: https://orcid.org/0000-0002-7619-7060)
- Katja Frenzel (ORCID: https://orcid.org/0000-0002-4446-5518)
- Michael Woodcox (ORCID: https://orcid.org/0000-0003-2730-3434)
- Burkhard Beckhoff
Institutions
- Physikalisch-Technische Bundesanstalt (DE)
- National Institute of Standards and Technology (US)
- Material Measurement Laboratory (US)
Publication Details
- Journal
- Physical review. B./Physical review. B
- Published
- 2025-03-05
- DOI
- https://doi.org/10.1103/physrevb.111.125107
- Primary Topic
- Advanced Chemical Physics Studies
- Type
- article
- Field-Weighted Citation Impact
- 0.00
Funders
- National Institute of Standards and Technology