106 citations · 609 across the 27 of their papers we have counts for
12 papers · 1 filter
Visualising emergent phenomena at oxide interfaces
Michael Oberaigner, Manuel Ederer, Sandeep Kumar Chaluvadi +5
Knowledge of atomic-level details of structure, chemistry, and electronic states is paramount for a comprehensive understanding of emergent properties at oxide interfaces. We utili…
Optimizing Experimental Parameters for Orbital Mapping
Manuel Ederer, Stefan Löffler
A new material characterization technique is emerging for the transmission electron microscope (TEM). Using electron energy-loss spectroscopy, real space mappings of the underlying…
Image Difference Metrics for High-Resolution Electron Microscopy
Manuel Ederer, Stefan Löffler
Digital image comparison and matching brings many advantages over the traditional subjective human comparison, including speed and reproducibility. Despite the existence of an abun…
Direct mapping of electronic orbitals in graphene using electron energy-loss spectroscopy
M. Bugnet, M. Ederer, V. K. Lazarov +4
The spatial distributions of anti-bonding and states in epitaxial graphene multilayers are mapped using electron energy-loss spectroscopy in a scanning transmissi…
EMCD with an electron vortex filter: Limitations and possibilities
Thomas Schachinger, Stefan Löffler, Andreas Steiger-Thirsfeld +5
We discuss the feasibility of detecting spin polarized electronic transitions with a vortex filter. This approach does not rely on the principal condition of the standard energy lo…
Mapping atomic orbitals with the transmission electron microscope: Images of defective graphene predicted from first-principles theory
Lorenzo Pardini, Stefan Löffler, Giulio Biddau +4
Transmission electron microscopy has been a promising candidate for mapping atomic orbitals for a long time. Here, we explore its capabilities by a first principles approach. For t…
Real-space mapping of electronic orbitals
Stefan Löffler, Matthieu Bugnet, Nicolas Gauquelin +5
Electronic states are responsible for most material properties, including chemical bonds, electrical and thermal conductivity, as well as optical and magnetic properties. Experimen…
Magnetic properties of single nanomagnets: EMCD on FePt nanoparticles
Sebastian Schneider, Darius Pohl, Stefan Löffler +5
Energy-loss magnetic chiral dichroism (EMCD) allows for the quantification of magnetic properties of materials at the nanometer scale. It is shown that with the support of simulati…
A pure state decomposition approach of the mixed dynamic form factor for mapping atomic orbitals
Stefan Löffler, Viktoria Motsch, Peter Schattschneider
We demonstrate how the mixed dynamic form factor (MDFF) can be interpreted as a quadratic form. This makes it possible to use matrix diagonalization methods to reduce the number of…
Transition probability functions for inelastic electron--electron scattering
Stefan Löffler, Peter Schattschneider
In this work, the transition matrix elements for inelastic electron--electron scattering are investigated. The angular part is given by spherical harmonics. For the weighted radial…
Electron vortices in crystals
Stefan Löffler, Peter Schattschneider
The propagation of electron beams carrying angular momentum in crystals is studied using a multislice approach for the model system Fe. It is found that the vortex beam is distorte…
Sub-nanometer free electrons with topological charge
P. Schattschneider, M. Stöger-Pollach, S. Löffler +3
The holographic mask technique is used to create freely moving electrons with quantized angular momentum. With electron optical elements they can be focused to vortices with diamet…