123 citations · 484 across the 21 of their papers we have counts for
22 papers
Evolution of interface magnetism in Fe/Alq3 bilayer
Avinash Ganesh Khanderao, Sonia Kaushik, Arun Singh Dev +6
Interface magnetism and topological structure of Fe on organic semiconductor film (Alq3) have been studied and compared with Fe film deposited directly on Si (100) substrate. To ge…
Origin of exchange bias in [Co/Pt]ML/Fe multilayer with orthogonal magnetic anisotropies
Sadhana Singh, Avinash G. Khanderao, Mukul Gupta +5
Magnetization reversal of soft ferromagnetic Fe layer, coupled to [Co/Pt]ML multilayer [ML] with perpendicular magnetic anisotropy (PMA), has been studied in-situ with an aim to un…
Lattice dynamics of endotaxial silicide nanowires
J. Kalt, M. Sternik, B. Krause +17
Self-organized silicide nanowires are considered as main building blocks of future nanoelectronics and have been intensively investigated. In nanostructures, the lattice vibrationa…
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…
Lattice dynamics and polarization-dependent phonon damping in -phase FeSi nanoislands
J. Kalt, M. Sternik, B. Krause +16
We determined the lattice dynamics of metastable, surface-stabilized -phase FeSi nanoislands epitaxially grown on the Si(111) surface with average heights and widths ranging…
Disentangling X-ray dichroism and birefringence via high-purity polarimetry
Annika T. Schmitt, Yves Joly, Kai S. Schulze +11
High-brilliance synchrotron radiation sources have opened new avenues for X-ray polarization analysis that go far beyond conventional polarimetry in the optical domain. With linear…
Ab initio and nuclear inelastic scattering studies of FeSi/GaAs heterostructures
O. Sikora, J. Kalt, M. Sternik +11
The structure and dynamical properties of the FeSi/GaAs(001) interface are investigated by density functional theory and nuclear inelastic scattering measurements. The stabilit…
Spin waves and spin-state transitions in a ruthenate high-temperature antiferromagnet
H. Suzuki, H. Gretarsson, H. Ishikawa +16
Ruthenium compounds play prominent roles in materials research ranging from oxide electronics to catalysis, and serve as a platform for fundamental concepts such as spin-triplet su…
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…
Magnetism and structure of in-situ grown FeN films studied using N K-edge XAS and nuclear resonance scattering
Mukul Gupta, Nidhi Pandey, Niti +5
We studied the structural and magnetic properties of \textit{in-situ} grown iron mononitride (FeN) thin films. Initial stages of film growth were trapped utilizing synchrotron base…
Interface Sharpening in Miscible and Isotopic Multilayers: Role of Short-Circuit Diffusion
Atul Tiwari, M. K. Tiwari, Mukul Gupta +2
Atomic diffusion at nanometer length scale may differ significantly from bulk diffusion, and may sometimes even exhibit counterintuitive behavior. In the present work, taking Cu/Ni…
Testing the influence of acceleration on time dilation using a rotating MÖssbauer absorber
Y. Friedman, J. M. Steiner, S. Livshitz +10
The aim of the experiment series was to test the influence of acceleration on time dilation by measuring the relative spectral shift between the resonance spectra of a rotating Mos…
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…
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…
Resonant inelastic x-ray scattering spectrometer with 25 meV resolution at Cu K-edge
Didem Ketenoglu, Manuel Harder, Konstantin Klementiev +6
An unparalleled resolution is reported with an inelastic x-ray scattering instrument at the Cu K-edge. Based on a segmented concave analyzer, featuring single crystal quartz (SiO_{…
Spin precession mapping at ferromagnetic resonance via nuclear resonant scattering
Lars Bocklage, Christian Swoboda, Kai Schlage +5
We probe the spin dynamics in a thin magnetic film at ferromagnetic resonance by nuclear resonant scattering of synchrotron radiation at the 14.4 keV resonance of Fe. The pr…
Tunable sub-luminal propagation of narrowband x-ray pulses
K. P. Heeg, J. Haber, D. Schumacher +9
Group velocity control is demonstrated for x-ray photons of 14.4 keV energy via a direct measurement of the temporal delay imposed on spectrally narrow x-ray pulses. Sub-luminal li…
X-ray resonant photoexcitation: line widths and energies of Kα transitions in highly charged Fe ions
J. K. Rudolph, S. Bernitt, S. W. Epp +14
Photoabsorption by and fluorescence of the Kα transitions in highly charged iron ions are essential mechanisms for X-ray radiation transfer in astrophysical environments. We study…
Vacuum-assisted generation and control of atomic coherences at x-ray energies
Kilian P. Heeg, Hans-Christian Wille, Kai Schlage +9
The control of light-matter interaction at the quantum level usually requires coherent laser fields. But already an exchange of virtual photons with the electromagnetic vacuum fiel…