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Sensitivity of nonlinear photoionization to resonance substructure in collective excitation

Author

Listed:
  • T. Mazza

    (European XFEL GmbH)

  • A. Karamatskou

    (Center for Free-Electron Laser Science, DESY
    University of Hamburg)

  • M. Ilchen

    (European XFEL GmbH
    Stanford PULSE Institute, SLAC National Accelerator Laboratory)

  • S. Bakhtiarzadeh

    (European XFEL GmbH
    University of Hamburg)

  • A. J. Rafipoor

    (European XFEL GmbH
    University of Hamburg)

  • P. O’Keeffe

    (CNR Istituto di Struttura della Materia, CP10)

  • T. J. Kelly

    (School of Physical Sciences and NCPST, Dublin City University)

  • N. Walsh

    (School of Physical Sciences and NCPST, Dublin City University)

  • J. T. Costello

    (School of Physical Sciences and NCPST, Dublin City University)

  • M. Meyer

    (European XFEL GmbH)

  • R. Santra

    (Center for Free-Electron Laser Science, DESY
    University of Hamburg)

Abstract

Collective behaviour is a characteristic feature in many-body systems, important for developments in fields such as magnetism, superconductivity, photonics and electronics. Recently, there has been increasing interest in the optically nonlinear response of collective excitations. Here we demonstrate how the nonlinear interaction of a many-body system with intense XUV radiation can be used as an effective probe for characterizing otherwise unresolved features of its collective response. Resonant photoionization of atomic xenon was chosen as a case study. The excellent agreement between experiment and theory strongly supports the prediction that two distinct poles underlie the giant dipole resonance. Our results pave the way towards a deeper understanding of collective behaviour in atoms, molecules and solid-state systems using nonlinear spectroscopic techniques enabled by modern short-wavelength light sources.

Suggested Citation

  • T. Mazza & A. Karamatskou & M. Ilchen & S. Bakhtiarzadeh & A. J. Rafipoor & P. O’Keeffe & T. J. Kelly & N. Walsh & J. T. Costello & M. Meyer & R. Santra, 2015. "Sensitivity of nonlinear photoionization to resonance substructure in collective excitation," Nature Communications, Nature, vol. 6(1), pages 1-6, November.
    • Handle: RePEc:nat:natcom:v:6:y:2015:i:1:d:10.1038_ncomms7799
    DOI: 10.1038/ncomms7799
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    Cited by:

    1. Aljoscha Rörig & Sang-Kil Son & Tommaso Mazza & Philipp Schmidt & Thomas M. Baumann & Benjamin Erk & Markus Ilchen & Joakim Laksman & Valerija Music & Shashank Pathak & Daniel E. Rivas & Daniel Rolles, 2023. "Multiple-core-hole resonance spectroscopy with ultraintense X-ray pulses," Nature Communications, Nature, vol. 14(1), pages 1-10, December.

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