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@ARTICLE{Storeck:459473,
      author       = {Storeck, G. and Rossnagel, K. and Ropers, C.},
      title        = {{U}ltrafast spot-profile {LEED} of a charge-density wave
                      phase transition},
      journal      = {Applied physics letters},
      volume       = {118},
      number       = {22},
      issn         = {1077-3118},
      address      = {Melville, NY},
      publisher    = {American Inst. of Physics},
      reportid     = {PUBDB-2021-02577},
      pages        = {221603},
      year         = {2021},
      abstract     = {We investigate the optically driven phase transition
                      between two charge-density wave (CDW) states at the surface
                      of tantalum disulfide(1T-TaS2). Specifically, we employ a
                      recently improved ultrafast low-energy electron diffraction
                      setup to study the transition from the nearlycommensurate to
                      the incommensurate (IC) CDW state. The experimental setup
                      allows us to follow transient changes in the diffraction
                      pat-tern with high momentum resolution and 1-ps electron
                      pulse duration. In particular, we trace the diffraction
                      intensities and spot profiles ofthe crystal lattice,
                      including main and CDW superstructure peaks, as well as the
                      diffuse background. Harnessing the enhanced data quality
                      ofthe instrumental upgrade, we follow the laser-induced
                      transient disorder in the system and perform a spot-profile
                      analysis that yields a sub-stantial IC-peak broadening for
                      very short time scales followed by a prolonged spot
                      narrowing.},
      cin          = {FS-SXQM},
      ddc          = {530},
      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:000683586000001},
      doi          = {10.1063/5.0052603},
      url          = {https://bib-pubdb1.desy.de/record/459473},
}