# MPSD

 2019-05-1513:45 [PUBDB-2019-02290] Lecture/Internal Report Schnell, M. Seminar zur Molekülphysik / Molecular Physics Seminar Lecture at Universität Hamburg (Hamburg, Germany), 3 Apr 2017 - 17 Jul 2017 CFEL Molecular Physics seminar series. This is a general topical seminar series on developments in modern molecular physics organized by the CFEL-CMI group Controlled Molecule Imaging and the CFEL-MPSD group Structure and Dynamics of Cold and Controlled Molecules. [...] External link: Fulltext 2019-04-1112:01 [PUBDB-2019-01931] Journal Article Rappe, A. M. Big data approach for effective ionic radii Computer physics communications 237, 238 - 243 (2019) [10.1016/j.cpc.2018.11.014]   Effective ionic radii are a useful tool for researchers in many disciplines. These radii are usually determined from interatomic distances and the values tabulated by Shannon and Prewitt are widely used since 1969. [...] Published on 2018-11-30. Available in OpenAccess from 2019-11-30.: PDF PDF (PDFA); Restricted: PDF PDF (PDFA); 2019-03-0710:56 [PUBDB-2019-01386] Journal Article et al Ultrafast dissolution and creation of bonds in IrTe 2 induced by photodoping Science advances 4(7), eaar3867 - (2018) [10.1126/sciadv.aar3867]   The observation and control of interweaving spin, charge, orbital, and structural degrees of freedom in materials on ultrafast time scales reveal exotic quantum phenomena and enable new active forms of nanotechnology. Bonding is the prime example of the relation between electronic and nuclear degrees of freedom [...] OpenAccess: PDF PDF (PDFA); 2018-12-1711:17 [PUBDB-2018-05572] Journal Article et al Ultrafast Doublon Dynamics in Photoexcited $1T-TaS_{2}$ Physical review letters 120(16), 166401 (2018) [10.1103/PhysRevLett.120.166401]   Strongly correlated materials exhibit intriguing properties caused by intertwined microscopic interactions that are hard to disentangle in equilibrium. Employing nonequilibrium time-resolved photoemission spectroscopy on the quasi-two-dimensional transition-metal dichalcogenide 1T-TaS$_2$, we identify a spectroscopic signature of doubly occupied sites (doublons) that reflects fundamental Mott physics. [...] OpenAccess: PDF PDF (PDFA); 2018-11-2415:55 [PUBDB-2018-04731] Journal Article et al A spatio-spectral polarization analysis of 1 $\mu m$-pumped bulk supercontinuum in a cubic crystal (YAG) Applied physics / B 124(6), 103 (2018) [10.1007/s00340-018-6966-1]   We present the first systematic study of the spatio-spectral polarization properties of a supercontinuum generated in a cubic crystal, yttrium–aluminum garnet (YAG), including a full spectral analysis of the white light core and surrounding ring structure. We observe no depolarization of the supercontinuum, and no spatial dependence of polarization ratios for any wavelength. [...] OpenAccess: PDF PDF (PDFA); External link: Fulltext 2018-01-1012:44 [PUBDB-2018-00326] Journal Article et al Corannulene and its complex with water: a tiny cup of water Physical chemistry, chemical physics 19(22), 14214 - 14223 (2017) [10.1039/C7CP01506B]   We report the results of a broadband rotational spectroscopic study of corannulene, $C_{20}H_{10}$, all of its singly substituted $^{13}$C isotopologues, and a complex of corannulene with one molecule of water. Corannulene is a polycyclic aromatic hydrocarbon (PAH) with a curved structure that results in a large dipole moment. [...] OpenAccess: PDF PDF (PDFA); 2018-01-0910:44 [PUBDB-2018-00272] Journal Article et al Ultrashort Free-Electron Laser X-ray Pulses Applied Sciences 7(9), 915 - (2017) [10.3390/app7090915]   For the investigation of processes happening on the time scale of the motion of bound electrons, well-controlled X-ray pulses with durations in the few-femtosecond and even sub-femtosecond range are a necessary prerequisite. Novel free-electron lasers sources provide these ultrashort, high-brightness X-ray pulses, but their unique aspects open up concomitant challenges for their characterization on a suitable time scale [...] OpenAccess: PDF PDF (PDFA); 2017-09-0707:32 [PUBDB-2017-10446] Journal Article et al Coherent Enantiomer-Selective Population Enrichment Using Tailored Microwave Fields Angewandte Chemie / International edition 56(41), 12512 – 12517 (2017) [10.1002/anie.201704901]   We report the experimental demonstration of coherent enantiomer-selective enrichment of chiral molecules by employing a novel microwave five-pulse scheme. Our results show that enantiomers can be selectively transferred to a rotational level of choice by applying sequences of resonant microwave pulses in a phase- and polarization-controlled manner. [...] Published on 2017-09-27. Available in OpenAccess from 2018-09-27.: PDF PDF (PDFA); Restricted: PDF PDF (PDFA); 2017-08-2910:31 [PUBDB-2017-10022] Journal Article Dwayne Miller, R. J. Compression of high-density 0.16 pC electron bunches through high field gradients for ultrafast single shot electron diffraction: The Compact RF Gun Structural dynamics 4(4), 044016 (2017) [10.1063/1.4979970]   We present an RF gun design for single shot ultrafast electron diffraction experiments that can produce sub-100 fs high-charge electron bunches in the 130 keV energy range. Our simulations show that our proposed half-cell RF cavity is capable of producing 137 keV, 27 fs rms (60 fs FWHM), 106 electron bunches with an rms spot size of 276 μm and a transverse coherence length of 2.0 nm. [...] OpenAccess: PDF PDF (PDFA); 2017-08-2910:24 [PUBDB-2017-10018] Journal Article et al Creating stable Floquet–Weyl semimetals by laser-driving of 3D Dirac materials Nature Communications 8, 13940 (2017) [10.1038/ncomms13940]   Tuning and stabilizing topological states, such as Weyl semimetals, Dirac semimetals or topological insulators, is emerging as one of the major topics in materials science. Periodic driving of many-body systems offers a platform to design Floquet states of matter with tunable electronic properties on ultrafast timescales. [...] OpenAccess: PDF PDF (PDFA);