# MPSD

Latest additions:
 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 2018-01-0910:44 [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); 2017-08-2910:21 [PUBDB-2017-10017] Journal Article et al Simultaneous control of magnetic topologies for reconfigurable vortex arrays NPG Asia Materials 9(2), e348 (2017) [10.1038/am.2016.199]   The topological spin textures in magnetic vortices in confined magnetic elements offer a platform for understanding the fundamental physics of nanoscale spin behavior and the potential of harnessing their unique spin structures for advanced magnetic technologies. For magnetic vortices to be practical, an effective reconfigurability of the two topologies of magnetic vortices, that is, the circularity and the polarity, is an essential prerequisite. [...] OpenAccess: PDF PDF (PDFA); 2017-04-2110:55 [PUBDB-2017-01767] Journal Article et al Multiple Supersonic Phase Fronts Launched at a Complex-Oxide Heterointerface Physical review letters 118(2), 027401 (2017) [10.1103/PhysRevLett.118.027401]   Selective optical excitation of a substrate lattice can drive phase changes across heterointerfaces. This phenomenon is a nonequilibrium analogue of static strain control in heterostructures and may lead to new applications in optically controlled phase change devices [...] OpenAccess: PDF PDF (PDFA); 2016-11-3010:41 [PUBDB-2016-05742] Journal Article et al Single-shot diffraction data from the Mimivirus particle using an X-ray free-electron laser Scientific data 3, 160060 (2016) [10.1038/sdata.2016.60]   Free-electron lasers (FEL) hold the potential to revolutionize structural biology by producing X-ray pules short enough to outrun radiation damage, thus allowing imaging of biological samples without the limitation from radiation damage. Thus, a major part of the scientific case for the first FELs was three-dimensional (3D) reconstruction of non-crystalline biological objects. [...] OpenAccess: PDF PDF (PDFA); 2016-08-2210:42 [PUBDB-2016-03283] Journal Article et al High-Field High-Repetition-Rate Sources for the Coherent THz Control of Matter Scientific reports 6, 22256 (2016) [10.1038/srep22256]   Ultrashort flashes of THz light with low photon energies of a few meV, but strong electric or magneticfield transients have recently been employed to prepare various fascinating nonequilibrium statesin matter. Here we present a new class of sources based on superradiant enhancement of radiationfrom relativistic electron bunches in a compact electron accelerator that we believe will revolutionizeexperiments in this field. [...] OpenAccess: PDF PDF (PDFA);