123 citations · 541 across the 28 of their papers we have counts for
29 papers
Customized spin spirals in ferromagnetic thin films
Anjali Panchwanee, Kai Schlage, Dieter Lott +8
The advancement of spintronic nanoscale devices hinges on the ability to flexibly engineer magnetic spin structures in thin-film stacks with precision and control. Meeting this dem…
Nuclear Heterodyne Interferometry for Gravitational Spectroscopy
Ralf Röhlsberger
Gravitational spectroscopy tests the coupling of gravity to matter by measuring gravitationally induced frequency shifts of quantum transitions. While modern optical clocks probe t…
Nonlinear phenomena in X-ray fluorescence from single nanoparticles under extreme conditions
Sebastian Cardoch, Tamme Wollweber, Sarodi Jonak Dutta +26
Materials exposed to intense femtosecond X-ray pulses with energies above their K-shell absorption edge can enter an extremely ionized state, which could give rise to nonlinear phe…
Single-particle incoherent diffractive imaging and amplified spontaneous emission in copper nanocubes
Tamme Wollweber, Sarodi Jonak Dutta, Zhou Shen +26
We demonstrate element-specific incoherent diffractive imaging (IDI) of single copper nanocubes using intensity correlations of K fluorescence at a hard X-ray free-electron lase…
Dark-fringe interferometer with dynamic phase control for Mössbauer science
Miriam Gerharz, Dominik Lentrodt, Lars Bocklage +10
Interference is a powerful tool for measuring and control. In Mössbauer science, interference effects are essential to most applications, due to the coherent scattering nature. How…
Single-shot sorting of Mössbauer time-domain data at X-ray free-electron lasers
Miriam Gerharz, Willi Hippler, Berit Marx-Glowna +28
Mössbauer spectroscopy is widely used to study structure and dynamics of matter with remarkably high energy resolution, provided by the narrow nuclear resonance line widths. Howeve…
Probing the Linewidth of the 12.4-keV Sc Isomeric Resonance in Solids by Nuclear Forward Scattering
Peifan Liu, Miriam Gerharz, Berit Marx-Glowna +37
The Sc transition from the nuclear ground state to the 12.389-keV isomer (lifetime 0.46~s) has an ultranarrow natural linewidth $Γ_{\ind{0}}\simeq 1.4$~feV, corresponding to…
Energy Time Ptychography for one-dimensional phase retrieval
Ankita Negi, Leon Merten Lohse, Sven Velten +9
Phase retrieval is at the heart of adaptive optics and modern high-resolution imaging. Without phase information, optical systems are limited to intensity-only measurements, hinder…
Interferometric measurement of nuclear resonant phase shift with a nanoscale Young double waveguide
Leon M. Lohse, Ankita Negi, Markus Osterhoff +6
The phase shift of an electromagnetic wave, imprinted by its interaction with atomic scatterers, is a central quantity in optics and photonics. In particular, it encodes informatio…
Letter of Intent: Towards a Vacuum Birefringence Experiment at the Helmholtz International Beamline for Extreme Fields
N. Ahmadiniaz, C. Bähtz, A. Benediktovitch +49
Quantum field theory predicts a nonlinear response of the vacuum to strong electromagnetic fields of macroscopic extent. This fundamental tenet has remained experimentally challeng…
Collective nuclear excitation and pulse propagation in single-mode x-ray waveguides
Leon M. Lohse, Petar Andrejić, Sven Velten +8
Waveguides offer a means to controllably couple atomic ensembles to the electromagnetic field therein. Here, we demonstrate x-ray propagation in planar thin-film waveguides coupled…
Efficient Interaction of Heralded X-ray Photons with a Beam Splitter
E. Strizhevsky, D. Borodin, A. Schori +3
We report the experimental demonstration of efficient interaction of multi kilo electron Volt heralded x-ray photons with a beam splitter. The measured heralded photon rate at the…
Electronic Quantum Coherence in Glycine Molecules Probed with Ultrashort X-ray Pulses in Real Time
David Schwickert, Marco Ruberti, Přemys Kolorenč +25
Quantum coherence between electronic states of a photoionized molecule and the resulting process of ultrafast electron-hole migration have been put forward as a possible quantum me…
Revealing charge anisotropies in metal compounds via high-purity x-ray polarimetry
Lena Scherthan, Juliusz A. Wolny, Isabelle Faus +12
Linear polarization analysis of hard x-rays is employed to probe electronic anisotropies in metal-containing complexes with very high selectivity. We use the pronounced linear dich…
Coherent x-ray-optical control of nuclear excitons with zeptosecond phase-stability
K. P. Heeg, A. Kaldun, C. Strohm +11
Coherent control of quantum dynamics is key to a multitude of fundamental studies and applications alike. In the visible or longer-wavelength domains, near-resonant light fields ha…
Scientific Opportunities with an X-ray Free-Electron Laser Oscillator
Bernhard Adams, Gabriel Aeppli, Thomas Allison +47
An X-ray free-electron laser oscillator (XFELO) is a new type of hard X-ray source that would produce fully coherent pulses with meV bandwidth and stable intensity. The XFELO compl…
Nuclear resonant scattering from 193Ir as a probe of the electronic and magnetic properties of iridates
Pavel Alexeev, Olaf Leupold, Ilya Sergueev +6
The high brilliance of the modern synchrotron radiation sources facilitates experiments with high energy x-rays. In this Letter we report on Nuclear Resonance Scattering at the 73…
Quantum Imaging with Incoherently Scattered Light from a Free-Electron Laser
Raimund Schneider, Thomas Mehringer, Giuseppe Mercurio +20
The advent of accelerator-driven free-electron lasers (FEL) has opened new avenues for high-resolution structure determination via diffraction methods that go far beyond convention…
Incoherent Diffractive Imaging via Intensity Correlations of hard X-rays
Anton Classen, Kartik Ayyer, Henry N. Chapman +2
Established x-ray diffraction methods allow for high-resolution structure determination of crystals, crystallized protein structures or even single molecules. While these technique…
Disentangling magnetic order on nanostructured surfaces
Denise Erb, Kai Schlage, Lars Bocklage +5
We present a synchrotron-based X-ray scattering technique which allows disentangling magnetic properties of heterogeneous systems with nanopatterned surfaces. This technique combin…
Nuclear resonant surface diffraction
Kai Schlage, Liudmila Dzemiantsova, Lars Bocklage +4
Nuclear resonant x-ray diffraction in grazing incidence geometry is used to determine the lateral magnetic configuration in a one-dimensional lattice of ferromagnetic nanostripes.…
A medium-resolution monochromator for 73 keV x-rays - Nuclear resonant scattering of synchrotron radiation from 193-Ir
Pavel Alexeev, Frank-Uwe Dill, Hans-Christian Wille +5
We report on the development and characterization of a medium resolution monochromator for synchrotron-based hyperfine spectroscopy at the 73 keV nuclear resonance of 193-Ir. The d…
Bottom-up fabrication of highly ordered metal nanostructures by hierarchical self-assembly
Denise Erb, Kai Schlage, Ralf Röhlsberger
In a hierarchical nanopatterning routine relying exclusively on self-assembly processes we combine crystal surface reconstruction, microphase separation of copolymers, and selectiv…
Stabilization of helical magnetic structures in thin multilayers
L. V. Dzemiantsova, G. Meier, R. Röhlsberger
Based on micromagnetic simulations, we report on a novel helical magnetic structure in a soft magnetic film that is sandwiched between and exchange-coupled to two hard magnetic lay…