@article{RubenssonSoderstromBinggelietal.2015,
  author    = {Rubensson, Jan-Erik and Soderstrom, Johan and Binggeli, Christian and Grasjo, Joakim and Andersson, Johan and Sathe, Conny and Hennies, Franz and Bisogni, Valentina and Huang, Yaobo and Olalde, Paul and Schmitt, Thorsten and Strocov, Vladimir N. and F{\"o}hlisch, Alexander and Kennedy, Brian and Pietzsch, Annette},
  title     = {Rydberg-Resolved Resonant Inelastic Soft X-Ray Scattering: Dynamics at Core Ionization Thresholds},
  series = {Physical review letters},
  volume    = {114},
  journal   = {Physical review letters},
  number    = {13},
  publisher = {American Physical Society},
  address   = {College Park},
  issn      = {0031-9007},
  doi       = {10.1103/PhysRevLett.114.133001},
  pages     = {5},
  year      = {2015},
  abstract  = {Resonant inelastic x-ray scattering spectra excited in the immediate vicinity of the core-level ionization thresholds of N-2 have been recorded. Final states of well-resolved symmetry-selected Rydberg series converging to valence-level ionization thresholds with vibrational excitations are observed. The results are well described by a quasi-two-step model which assumes that the excited electron is unaffected by the radiative decay. This threshold dynamics simplifies the interpretation of resonant inelastic x-ray scattering spectra considerably and facilitates characterization of low-energy excited final states in molecular systems.},
  language  = {en}
}
@article{SchreckPietzschKennedyetal.2016,
  author    = {Schreck, Simon and Pietzsch, Annette and Kennedy, Brian and Sathe, Conny and Miedema, Piter S. and Techert, Simone and Strocov, Vladimir N. and Schmitt, Thorsten and Hennies, Franz and Rubensson, Jan-Erik and F{\"o}hlisch, Alexander},
  title     = {Ground state potential energy surfaces around selected atoms from resonant inelastic x-ray scattering},
  series = {Scientific reports},
  volume    = {6},
  journal   = {Scientific reports},
  publisher = {Nature Publ. Group},
  address   = {London},
  issn      = {2045-2322},
  doi       = {10.1038/srep20054},
  pages     = {7},
  year      = {2016},
  abstract  = {Thermally driven chemistry as well as materials' functionality are determined by the potential energy surface of a systems electronic ground state. This makes the potential energy surface a central and powerful concept in physics, chemistry and materials science. However, direct experimental access to the potential energy surface locally around atomic centers and to its long-range structure are lacking. Here we demonstrate how sub-natural linewidth resonant inelastic soft x-ray scattering at vibrational resolution is utilized to determine ground state potential energy surfaces locally and detect long-range changes of the potentials that are driven by local modifications. We show how the general concept is applicable not only to small isolated molecules such as O2 but also to strongly interacting systems such as the hydrogen bond network in liquid water. The weak perturbation to the potential energy surface through hydrogen bonding is observed as a trend towards softening of the ground state potential around the coordinating atom. The instrumental developments in high resolution resonant inelastic soft x-ray scattering are currently accelerating and will enable broad application of the presented approach. With this multidimensional potential energy surfaces that characterize collective phenomena such as (bio)molecular function or high-temperature superconductivity will become accessible in near future.},
  language  = {en}
}