4.8 Article

Ultrafast dynamics of correlation bands following XUV molecular photoionization

Journal

NATURE PHYSICS
Volume 17, Issue 3, Pages 327-+

Publisher

NATURE PORTFOLIO
DOI: 10.1038/s41567-020-01073-3

Keywords

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Funding

  1. ANR Circe [ANR-16-CE30-0012]
  2. DFG through the QUTIF priority programme
  3. US ARO [W911NF-14-1-0383]
  4. Netherlands Organisation for Scientific Research (NWO) as part of the Dutch Astrochemistry Network
  5. CNRS
  6. Spinozapremie
  7. Agence Nationale de la Recherche (ANR) [ANR-16-CE30-0012] Funding Source: Agence Nationale de la Recherche (ANR)

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The study shows the universal role of correlation bands in ultrafast energy relaxation of size-scalable two-dimensional molecules following ionization by an ultrashort XUV pulse. It observed long lifetimes that nonlinearly increase with the number of valence electrons and proposed a general law based on solid-like electron-phonon scattering. This offers new opportunities in attosecond science and high-energy photophysics.
Modern ultrashort X-ray/XUV (extreme ultraviolet) sources provide unique opportunities to investigate the primary reactions of matter upon energetic excitation. Understanding these processes in molecules on ultrafast timescales is required to improve bespoke high-energy radiation detectors, nanomedicine schemes or to study the molecular composition of interstellar media. However, current experiments struggle to provide a general framework because of the uniqueness and complexity of each system. Here we show the universal role of correlation bands-features created by electron correlation. This is done by studying ultrafast energy relaxation of size-scalable two-dimensional molecules following ionization by an ultrashort XUV pulse. We observed long lifetimes that nonlinearly increase with the number of valence electrons. A general law based on solid-like electron-phonon scattering is proposed, which explains both our results and previously reported measurements. This offers new opportunities in attosecond science and high-energy photophysics.

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