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Sensitivity of nonlinear photoionization to resonance substructure in collective excitation

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...

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Autores principales: Mazza, T., Karamatskou, A., Ilchen, M., Bakhtiarzadeh, S., Rafipoor, A. J., O'Keeffe, P., Kelly, T. J., Walsh, N., Costello, J. T., Meyer, M., Santra, R.
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Nature Pub. Group 2015
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4403373/
https://www.ncbi.nlm.nih.gov/pubmed/25854939
http://dx.doi.org/10.1038/ncomms7799
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author Mazza, T.
Karamatskou, A.
Ilchen, M.
Bakhtiarzadeh, S.
Rafipoor, A. J.
O'Keeffe, P.
Kelly, T. J.
Walsh, N.
Costello, J. T.
Meyer, M.
Santra, R.
author_facet Mazza, T.
Karamatskou, A.
Ilchen, M.
Bakhtiarzadeh, S.
Rafipoor, A. J.
O'Keeffe, P.
Kelly, T. J.
Walsh, N.
Costello, J. T.
Meyer, M.
Santra, R.
author_sort Mazza, T.
collection PubMed
description 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.
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spelling pubmed-44033732015-04-29 Sensitivity of nonlinear photoionization to resonance substructure in collective excitation Mazza, T. Karamatskou, A. Ilchen, M. Bakhtiarzadeh, S. Rafipoor, A. J. O'Keeffe, P. Kelly, T. J. Walsh, N. Costello, J. T. Meyer, M. Santra, R. Nat Commun Article 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. Nature Pub. Group 2015-04-09 /pmc/articles/PMC4403373/ /pubmed/25854939 http://dx.doi.org/10.1038/ncomms7799 Text en Copyright © 2015, Nature Publishing Group, a division of Macmillan Publishers Limited. All Rights Reserved. http://creativecommons.org/licenses/by/4.0/ This work is licensed under a Creative Commons Attribution 4.0 Unported License. The images or other third party material in this article are included in the article's Creative Commons license, unless indicated otherwise in the credit line; if the material is not included under the Creative Commons license, users will need to obtain permission from the license holder to reproduce the material. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/
spellingShingle Article
Mazza, T.
Karamatskou, A.
Ilchen, M.
Bakhtiarzadeh, S.
Rafipoor, A. J.
O'Keeffe, P.
Kelly, T. J.
Walsh, N.
Costello, J. T.
Meyer, M.
Santra, R.
Sensitivity of nonlinear photoionization to resonance substructure in collective excitation
title Sensitivity of nonlinear photoionization to resonance substructure in collective excitation
title_full Sensitivity of nonlinear photoionization to resonance substructure in collective excitation
title_fullStr Sensitivity of nonlinear photoionization to resonance substructure in collective excitation
title_full_unstemmed Sensitivity of nonlinear photoionization to resonance substructure in collective excitation
title_short Sensitivity of nonlinear photoionization to resonance substructure in collective excitation
title_sort sensitivity of nonlinear photoionization to resonance substructure in collective excitation
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4403373/
https://www.ncbi.nlm.nih.gov/pubmed/25854939
http://dx.doi.org/10.1038/ncomms7799
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