Publications (10)
Transient laser-induced periodic surface structures revealed by time-resolved EUV diffuse scattering
D. Ksenzov, F. Capotondi, A. A. Maznev +12
The formation of permanent laser-induced periodic surface structures (LIPSS) on solid surfaces under impulsive laser irradiation above the damage threshold has been subject of exte…
Coherent control of magnetization precession by double-pulse activation of effective fields from magnetoacoustics and demagnetization
M. Mattern, F. -C. Weber, D. Engel +2
We demonstrate the coherent optical control of magnetization precession in a thin Ni film by a second excitation pulse which amplifies or attenuates the precession induced by a fir…
Time-domain extreme ultraviolet diffuse scattering spectroscopy of nanoscale surface phonons
F. Capotondi, A. Maznev, F. Bencivenga +18
We report the observation of dynamic fringe patterns in the diffuse scattering of extreme ultraviolet light from surfaces, following femtosecond optical excitation. At each point o…
Hyper-domains in exchange bias micro-stripe pattern
K. Theis-Broehl, A. Westphalen, H. Zabel +9
A combination of experimental techniques, e.g. vector-MOKE magnetometry, Kerr microscopy and polarized neutron reflectometry, was applied to study the field induced evolution of th…
Linear dichroic soft X-ray microscopy of ferroelectric stripe domains in epitaxial KNaNbO
M. Schneider, T. A. Butcher, S. Wagner +19
Functional properties of ferroelectric thin films are governed by domains that can be engineered by epitaxial strain. Soft X-ray microscopy can image domain structures with element…
Electron dynamics in planar radio frequency magnetron plasmas: II. Heating and energization mechanisms studied via a 2d3v particle-in-cell/Monte Carlo code
D. Eremin, B. Berger, D. Engel +10
The present work investigates electron transport and heating mechanisms using an (r, z) particle-in-cell (PIC) simulation of a typical rf-driven axisymmetric magnetron discharge wi…
Deterministic Generation and Guided Motion of Magnetic Skyrmions by Focused He-Ion Irradiation
L. -M. Kern, B. Pfau, V. Deinhart +17
Magnetic skyrmions are quasiparticles with non-trivial topology, envisioned to play a key role in next-generation data technology while simultaneously attracting fundamental resear…
Origin of strong-field induced low-order harmonic generation in amorphous solids
P. Jürgens, B. Liewehr, B. Kruse +8
Kerr-type nonlinearities form the basis for our physical understanding of nonlinear optical phenomena in condensed matter, such as self-focusing, solitary waves, and wave mixing. I…
First experiments with ultrashort, circularly polarized soft X-ray pulses at FLASH2
S. Marotzke, D. Gupta, R. -P. Wang +23
Time-resolved absorption spectroscopy as well as magnetic circular dichroism with circularly polarized soft X-rays (XAS and XMCD) are powerful tools to probe electronic and magneti…
Diffusion Monte Carlo calculations for the ground states of atoms and ions in neutron star magnetic fields
S. Bucheler, D. Engel, J. Main +1
The diffusion quantum Monte Carlo method is extended to solve the old theoretical physics problem of many-electron atoms and ions in intense magnetic fields. The feature of our app…