@article{048c82a76e58441ea0630f8f40385f64,
title = "Ultrafast X-Ray Scattering Measurements of Coherent Structural Dynamics on the Ground-State Potential Energy Surface of a Diplatinum Molecule",
abstract = "We report x-ray free electron laser experiments addressing ground-state structural dynamics of the diplatinum anion Pt2POP4 following photoexcitation. The structural dynamics are tracked with <100 fs time resolution by x-ray scattering, utilizing the anisotropic component to suppress contributions from the bulk solvent. The x-ray data exhibit a strong oscillatory component with period 0.28 ps and decay time 2.2 ps, and structural analysis of the difference signal directly shows this as arising from ground-state dynamics along the PtPt coordinate. These results are compared with multiscale Born-Oppenheimer molecular dynamics simulations and demonstrate how off-resonance excitation can be used to prepare a vibrationally cold excited-state population complemented by a structure-dependent depletion of the ground-state population which subsequently evolves in time, allowing direct tracking of ground-state structural dynamics.",
author = "Kristoffer Haldrup and Gianluca Levi and Elisa Biasin and Peter Vester and Laursen, \{Mads Goldschmidt\} and Frederik Beyer and Kj{\ae}r, \{Kasper Skov\} and \{Brandt Van Driel\}, Tim and Tobias Harlang and Dohn, \{Asmus O.\} and Hartsock, \{Robert J.\} and Silke Nelson and Glownia, \{James M.\} and Lemke, \{Henrik T.\} and Morten Christensen and Gaffney, \{Kelly J.\} and Henriksen, \{Niels E.\} and M{\o}ller, \{Klaus B.\} and Nielsen, \{Martin M.\}",
note = "Funding Information: The DTU-affiliated authors gratefully acknowledge DANSCATT for supporting the beamtime efforts. M. M. N., M. G. L., E. B., A. O. D., and K. B. M. thank the Independent Research Fund Denmark for financial support under Grants No. DFF-4002-00272 and No. DFF-8021-00347B. A. O. D. thanks the Icelandic Research Fund (Grant No. 174244-051) and the Villum Foundation for financial support. K. J. G. acknowledges support from the AMOS program within the Chemical Sciences, Geosciences and Biosciences Division of the Office of Basic Energy Sciences, Office of Science, U.S. Department of Energy. Use of the Linac Coherent Light Source (LCLS), SLAC National Accelerator Laboratory, is supported by the U.S. Department of Energy, Office of Science, Office of Basic Energy Sciences under Contract No. DE-AC02-76SF00515. Publisher Copyright: {\textcopyright} 2019 American Physical Society.",
year = "2019",
month = feb,
day = "13",
doi = "10.1103/PhysRevLett.122.063001",
language = "English",
volume = "122",
journal = "Physical Review Letters",
issn = "0031-9007",
publisher = "American Physical Society",
number = "6",
}