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@ARTICLE{Yang:459472,
      author       = {Yang, L. X. and Rohde, G. and Chen, Y. J. and Shi, W. J.
                      and Liu, Z. K. and Chen, F. and Chen, Y. L. and Rossnagel,
                      K. and Bauer, Michael},
      title        = {{E}xperimental evidence for a metastable state in
                      {F}e{T}e$_{1−x}{S}e_{x}$ following coherent-phonon
                      excitation},
      journal      = {Journal of electron spectroscopy and related phenomena},
      volume       = {250},
      issn         = {0368-2048},
      address      = {New York, NY [u.a.]},
      publisher    = {Elsevier},
      reportid     = {PUBDB-2021-02576},
      pages        = {147085},
      year         = {2021},
      abstract     = {Changes of the electronic structure of FeTe$_{1−x}Se_{x}$
                      (x = 0, 0.3) upon ultrafast excitation with
                      near-infrared laser pulses are investigated using time- and
                      angle-resolved extreme ultraviolet photoemission
                      spectroscopy. At different temperatures and for different
                      doping levels we observe a global oscillation of energy
                      bands near the Fermi energy driven by the coherent
                      excitation of the A$_{1g}$(Te) phonon mode
                      inFeTe$_{1−x}Se_{x}$. Prominently, photo-induced band
                      shifts and a spectral weight reduction persist for at least
                      300 ps, long after the decay of the photo-excited carriers
                      and the damping of the coherent phonons. We argue that the
                      system escapes from the original equilibrium state and is
                      transiently trapped in a possibly metastable state
                      envisioning a purely optical means of manipulating the
                      electronic structure in an iron-based superconductor.},
      cin          = {FS-SXQM},
      ddc          = {620},
      cid          = {I:(DE-H253)FS-SXQM-20190201},
      pnm          = {632 - Materials – Quantum, Complex and Functional
                      Materials (POF4-632)},
      pid          = {G:(DE-HGF)POF4-632},
      experiment   = {EXP:(DE-MLZ)External-20140101},
      typ          = {PUB:(DE-HGF)16},
      UT           = {WOS:000670411800005},
      doi          = {10.1016/j.elspec.2021.147085},
      url          = {https://bib-pubdb1.desy.de/record/459472},
}