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@ARTICLE{Wenthaus:620104,
      author       = {Wenthaus, Lukas and Kabachnik, Nikolay and Borgwardt, Mario
                      and Palutke, Steffen and Kutnyakhov, Dmytro and Pressacco,
                      Federico and Scholz, Markus and Potorochin, Dmitrii and
                      Wind, Nils and Duesterer, Stefan and Brenner, Guenter and
                      Gessner, Oliver and Molodtsov, Serguei and Eberhardt,
                      Wolfgang and Roth, Friedrich},
      title        = {{I}nsights into the laser-assisted photoelectric effect
                      from solid-state surfaces},
      reportid     = {PUBDB-2025-00022, arXiv:2309.00099},
      year         = {2024},
      note         = {18 pages, 3 figures},
      abstract     = {Photoemission from a solid surface provides a wealth of
                      information about the electronic structure of the surface
                      and its dynamic evolution. Ultrafast pump-probe experiments
                      are particularly useful to study the dynamic interactions of
                      photons with surfaces as well as the ensuing electron
                      dynamics induced by these interactions. Time-resolved
                      laser-assisted photoemission (tr-LAPE) from surfaces is a
                      novel technique to gain deeper understanding of the
                      fundamentals underlying the photoemission process. Here, we
                      present the results of a femtosecond time-resolved soft
                      X-ray photoelectron spectroscopy experiment on two different
                      metal surfaces conducted at the X-ray Free-Electron Laser
                      FLASH in Hamburg. We study photoemission from the W 4f and
                      Pt 4f core levels using ultrashort soft X-ray pulses in
                      combination with synchronized infrared (IR) laser pulses.
                      When both pulses overlap in time and space, laser-assisted
                      photoemission results in the formation of a series of
                      sidebands that reflect the dynamics of the laser-surface
                      interaction. We demonstrate a qualitatively new level of
                      sideband generation up to the sixth order and a surprising
                      material dependence of the number of sidebands that has so
                      far not been predicted by theory. We provide a
                      semi-quantitative explanation of this phenomenon based on
                      the different dynamic dielectric responses of the two
                      materials. Our results advance the understanding of the LAPE
                      process and reveal new details of the IR field present in
                      the surface region, which is determined by the dynamic
                      interplay between the IR laser field and the dielectric
                      response of the metal surfaces.},
      cin          = {DOOR ; HAS-User / FS-LA / FS-FLASH-O / FS-FLASH /
                      FS-FLASH-B / $XFEL_E2_THE$ / $XFEL_DO_DD$ / FS-SXQM /
                      FS-PET-S},
      ddc          = {530},
      cid          = {I:(DE-H253)HAS-User-20120731 / I:(DE-H253)FS-LA-20130416 /
                      I:(DE-H253)FS-FLASH-O-20160930 /
                      I:(DE-H253)FS-FLASH-20140814 /
                      I:(DE-H253)FS-FLASH-B-20160930 /
                      $I:(DE-H253)XFEL_E2_THE-20210408$ /
                      $I:(DE-H253)XFEL_DO_DD-20210408$ /
                      I:(DE-H253)FS-SXQM-20190201 / I:(DE-H253)FS-PET-S-20190712},
      pnm          = {631 - Matter – Dynamics, Mechanisms and Control
                      (POF4-631) / 6G2 - FLASH (DESY) (POF4-6G2) / 05K22OF2 -
                      Untersuchungen des Ladungstransfers an Grenzflächen mittels
                      pikosekunden zeitaufgelöster Photoelektronenspektroskopie
                      bei Umgebungsdruck (BMBF-05K22OF2) / SFB 925 B02 -
                      Ultraschnelle Dynamik in stark korrelierten Systemen (B02)
                      (201270818)},
      pid          = {G:(DE-HGF)POF4-631 / G:(DE-HGF)POF4-6G2 /
                      G:(DE-Ds200)BMBF-05K22OF2 / G:(GEPRIS)201270818},
      experiment   = {EXP:(DE-H253)F-PG2-20150101},
      typ          = {PUB:(DE-HGF)25},
      eprint       = {2309.00099},
      howpublished = {arXiv:2309.00099},
      archivePrefix = {arXiv},
      SLACcitation = {$\%\%CITATION$ = $arXiv:2309.00099;\%\%$},
      url          = {https://bib-pubdb1.desy.de/record/620104},
}