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12 papers · 2 filters
A Rate Model of Electron Populations for Non-linear High-Fluence X-ray Absorption Near-Edge Spectra
Robin Y. Engel, Markus Scholz, Jan O. Schunck +1
Absorbing a focused, femtosecond X-ray pulse from a Free-Electron Laser (FEL) can lead to extreme electronic excitations in solids. This excitation drives changes of the electronic…
Structural changes in Ti1-xAlxN coatings during turning: A XANES and EXAFS study of worn tools
L. Rogström, M. Moreno, J. Andersson +5
Structural changes in Ti1-xAlxN coated tool inserts used for turning in 316L stainless steel were investigated by XANES, EXAFS, EDS, and STEM. For coarse-grained fcc-structured Ti1…
Investigating the Electromechanical Behavior of Unconventionally Ferroelectric -based Capacitors Through Operando Nanobeam X-ray Diffraction
Evgenios Stylianidis, Pranav Surabhi, Ruben Hamming-Green +13
Understanding various aspects of ferroelectricity in hafnia-based nanomaterials is of vital importance for the development of future non-volatile memory and logic devices. Here, th…
Electron Dynamics at High-Energy Densities in Nickel from Non-linear Resonant X-ray Absorption Spectra
Robin Y. Engel, Oliver Alexander, Kaan Atak +40
The pulse intensity from X-ray free-electron lasers (FELs) can create extreme excitation densities in solids, entering the regime of non-linear X-ray-matter interactions. We show L…
Anisotropic strain variations during the confined growth of Au nanowires
Giuseppe Abbondanza, Andrea Grespi, Alfred Larsson +7
The electrochemical growth of Au nanowires in a template of nano-porous anodic aluminum oxide was investigated in situ by means of grazing-incidence transmission small- and wide-an…
Disentangling Electron-Boson Interactions on the Surface of a Familiar Ferromagnet
Håkon I. Røst, Federico Mazzola, Johannes Bakkelund +5
We report energy renormalizations from electron-phonon and electron-magnon interactions in spin minority surface resonances on Ni(111). The different interactions are identified, d…