159 citations · 810 across the 16 of their papers we have counts for
19 papers
Controlled beams of cryo-cooled protein-like nanoparticles
Jingxuan He, Karol Długołecki, Hubertus Bromberger +2
We report a cryogenic buffer-gas-cell-aerodynamic-lens-stack setup that enables the generation of shock-frozen, dense, and controllable beams of various nanoparticles in the gas ph…
Proton transfer and hydronium formation in ionized water
Ivo S. Vinklárek, Sebastian Trippel, Michal Belina +4
Aqueous radiation chemistry emerges through ultrafast proton transfer and ion-radical formation with unexplored energy-redistribution dynamics steering the subsequent reactions. We…
A versatile and transportable endstation for controlled molecule experiments
Wuwei Jin, Hubertus Bromberger, Lanhai He +7
We report on a new versatile transportable endstation for controlled molecule (eCOMO) experiments providing a combination of molecular beam purification by electrostatic deflection…
Controlled molecule injector for cold, dense, and pure molecular beams at the European x-ray free-electron laser
Lanhai He, Melby Johny, Thomas Kierspel +27
A permanently available molecular-beam injection setup for controlled molecules (COMO) was installed and commissioned at the small quantum systems (SQS) instrument at the European…
TEMPUS, a Timepix4-based system for event-based X-rays detection
Jonathan Correa, Alexandr Ignatenko, David Pennicard +16
A readout system based on the Timepix4 ASIC, is being developed for photon science. The TEMPUS detector can be operated in two distinct modes: a photon counting mode, which allows…
Timepix3: single-pixel multi-hit energy-measurement behavior
Hubertus Bromberger, David Pennicard, Rafael Ballabriga +2
The event-driven hybrid-pixel detector readout chip, Timepix3, has the ability to simultaneously measure the time of an event on the nanosecond timescale and the energy deposited i…
Reaction Pathways of Water Dimer Following Single Ionization
Ivo S. Vinklárek, Hubertus Bromberger, Nidin Vadassery +3
Water dimer -- a vital component of the earth's atmosphere -- is an important prototypical hydrogen-bonded system. It provides direct insight into fundamen…
Single-shot MHz velocity-map-imaging using two Timepix3 cameras
Hubertus Bromberger, Christopher Passow, David Pennicard +10
We demonstrate the application of event-driven Timepix3-based detectors in combination with a double-sided velocity-map-imaging spectrometer to record the full 3D momentum of charg…
Clocking Auger Electrons
D. C. Haynes, M. Wurzer, A. Schletter +34
Intense X-ray free-electron lasers (XFELs) can rapidly excite matter, leaving it in inherently unstable states that decay on femtosecond timescales. As the relaxation occurs primar…
Femtosecond profiling of shaped X-ray pulses
M. C. Hoffmann, I. Grguraš, C. Behrens +20
Arbitrary manipulation of the temporal and spectral properties of X-ray pulses at free-electron lasers (FELs) would revolutionize many experimental applications. At the Linac Coher…
Ultrafast Momentum Imaging of Pseudospin-Flip Excitations in Graphene
S. Aeschlimann, R. Krause, M. Chávez-Cervantes +5
The pseudospin of Dirac electrons in graphene manifests itself in a peculiar momentum anisotropy for photo-excited electron-hole pairs. These interband excitations are in fact forb…
Restoring Interlayer Josephson Coupling in La_{1.885}Ba_{0.115}CuO_4 by Charge Transfer Melting of Stripe Order
V. Khanna, R. Mankowsky, M. Petrich +10
We show that disruption of charge-density-wave (stripe) order by charge transfer excitation, enhances the superconducting phase rigidity in La_{1.885}Ba_{0.115}CuO_4 (LBCO). Time-R…
Enhanced electron-phonon coupling in graphene with periodically distorted lattice
E. Pomarico, M. Mitrano, H. Bromberger +11
Electron-phonon coupling directly determines the stability of cooperative order in solids, including superconductivity, charge and spin density waves. Therefore, the ability to enh…
Spatially resolved ultrafast magnetic dynamics launched at a complex-oxide hetero-interface
M. Först, A. D. Caviglia, R. Scherwitzl +18
Static strain in complex oxide heterostructures has been extensively used to engineer electronic and magnetic properties at equilibrium. In the same spirit, deformations of the cry…
Angle-resolved photoemission spectroscopy with 9-eV photon-energy pulses generated in a gas-filled hollow-core photonic crystal fiber
H. Bromberger, A. Ermolov, F. Belli +10
A recently developed source of ultraviolet radiation, based on optical soliton propagation in a gas-filled hollow-core photonic crystal fiber, is applied here to angle-resolved pho…
Phonon-pump XUV-photoemission-probe in graphene: evidence for non-adiabatic heating of Dirac carriers by lattice deformation
Isabella Gierz, Matteo Mitrano, Hubertus Bromberger +11
We modulate the atomic structure of bilayer graphene by driving its lattice at resonance with the in-plane E1u lattice vibration at 6.3um. Using time- and angle-resolved photoemiss…
Melting of Charge Stripes in Vibrationally Driven La1.875Ba0.125CuO4: Assessing the Respective Roles of Electronic and Lattice Order in Frustrated Superconductors
M. Först, R. I. Tobey, H. Bromberger +15
We report femtosecond resonant soft X-ray diffraction measurements of the dynamics of the charge order and of the crystal lattice in non-superconducting, stripe-ordered La1.875Ba0.…
Ultrafast strain engineering in complex oxide heterostructures
A. D. Caviglia, R. Scherwitzl, P. Popovich +11
We report on ultrafast optical experiments in which femtosecond mid-infrared radiation is used to excite the lattice of complex oxide heterostructures. By tuning the excitation ene…
Driving magnetic order in a manganite by ultrafast lattice excitation
M. Först, R. I. Tobey, S. Wall +14
Optical control of magnetism, of interest for high-speed data processing and storage, has only been demonstrated with near-infrared excitation to date. However, in absorbing materi…