Ernst Ruska Centre

Optically Active Single Hole Spin in ZnSe

Abstract Semiconductor hole spins offer a pathway to extended coherence times by decoupling from nuclear magnetic noise, while their spin–orbit coupling enables fast all-electrical control. In ZnSe, however, realizing this potential has been limited by p-doping challenges. Here,...

Raman Spectroscopy of Laser-Micro-Annealing-Induced Structural Changes in Ti-6Al-4V

This short study presents the results of micro-Raman investigations performed on the alloy Ti-6Al-4V, which was additively manufactured via metal fused filament fabrication (MF3). Local laser micro-annealing was applied at different power intensities to distinct regions. The appl...

Irreversible Silver Migration in Single CsPbBr3 Perovskite Nanowire Devices

Abstract Silver (Ag) has gained interest as an electrode material for metal halide perovskites due to its high electrical conductivity, low cost, and simple deposition. The electromigration and interface redox-process of Ag has been exploited for electronic applications such as m...

Probing and Graph Coloring Techniques for Trace Estimation in Lattice QCD

ABSTRACT The computation of , where is the Wilson–Dirac matrix of Lattice QCD, is a fundamental and computationally demanding task with applications to disconnected hadronic correlation functions. Since is a dense matrix of prohibitive size, its trace cannot be computed exactly,...

In situ visualization of autophagy reveals the presence of vesicles at the expanding phagophore rim

The autophagy core machinery mediates the enclosure of cytosolic cargo destined for degradation in the lysosome. The Atg9-Atg2-Atg18 complex coordinates phagophore expansion via directed lipid transfer until closure of the phagophore rim. Using an Atg2 variant (Atg2-PM4) as a mod...

Deformable precipitates locally modify fault-mediated plasticity for strength-ductility synergy

Precipitates in structural alloys are conventionally understood as passive obstacles to dislocation motion. Here we show that semi-coherent hexagonal close-packed precipitates in a low-stacking-fault-energy Ni50Co30Ru20 multi-principal element alloy cooperate with planar-fault pl...

Epitaxial MgSnN 2 on 4H‐SiC (0001): An Earth‐Abundant Nitride for Green Optoelectronics and Photovoltaics

ABSTRACT Group II–IV‐Nitrides has emerged as a novel class of Earth‐abundant semiconductors. Owing to their tunable bandgaps these materials are attractive candidates for replacing expensive Ga‐based alloys in photovoltaics and green‐gap optoelectronics. In this work, epitaxial g...

Imaging Ionic Displacements Across Inclined Ferroelectric Domains by a Reciprocity Approach to 4D‐STEM

ABSTRACT The accurate measurement of ionic displacements in ferroelectrics by transmission electron microscopy (TEM) requires the illumination to be aligned exactly along a low‐index crystal zone axis. Adjacent domains in ferroelastic materials are often inherently inclined, hind...

Multiscale characterization of cortical signatures in positive and negative schizotypy:a worldwide ENIGMA study

Positive and negative schizotypy reflect distinct patterns of subclinical traits in the general population associated with neurodevelopmental and schizophrenia-spectrum pathologies. Yet, a comprehensive characterization of the unique and shared neuroanatomical signatures of these...

Time-resolved imaging of antiferromagnetic skyrmion interactions

Abstract Quantifying particle interactions is central to understanding and controlling collective dynamics in particle-based devices such as those comprising skyrmion ensembles. Here we directly visualize, in real time, the nanosecond current-driven dynamics of an antiferromagnet...

In situ electron microscopy of LaNiO3 transformation during reduction and methane dry reforming

Abstract By in situ electron microscopy we show the intermediate phase formation during decomposition of LaNiO 3 , a model methane dry reforming (DRM) catalyst, under different gas atmospheres. By combining dark- and bright-field imaging with secondary-electron contrast and opera...