32 citations · 133 across the 9 of their papers we have counts for
10 papers
Scan-Coil Delay Causes Anisotropic Signal Loss in Fast 4D-STEM
Vishal Kumar, Andreas Jehle, Tizian Lorenzen +4
Fast pixelated detectors are driving 4D-STEM toward microsecond dwell times, a regime in which the finite response of the scan deflection coils becomes comparable to the dwell time…
Molecular beam epitaxy of wafer-scale O-band InAs/InGaAs quantum dots on GaAs for quantum photonics
Pavel S. Avdienko, Lukas Hanschke, Quirin Buchinger +13
We report a scalable molecular beam epitaxy strategy to achieve a low density of O-band electrically tunable InAs/InGaAs quantum dots (QDs) on GaAs(001) substrates. Our approach is…
Automated detection and mapping of crystal tilt using thermal diffuse scattering in transmission electron microscopy
Mauricio Cattaneo, Knut Müller-Caspary, Juri Barthel +6
Quantitative interpretation of transmission electron microscopy (TEM) data of crystalline specimens often requires the accurate knowledge of the local crystal orientation. A method…
Lattice reconstruction in MoSe-WSe heterobilayers synthesized by chemical vapor deposition
Zhijie Li, Farsane Tabataba-Vakili, Shen Zhao +11
Vertical van der Waals heterostructures of semiconducting transition metal dichalcogenides realize moiré systems with rich correlated electron phases and moiré exciton phenomena. F…
Inverse Multislice Ptychography by Layer-wise Optimisation and Sparse Matrix Decomposition
Arya Bangun, Oleh Melnyk, Benjamin März +5
We propose algorithms based on an optimisation method for inverse multislice ptychography in, e.g. electron microscopy. The multislice method is widely used to model the interactio…
Live processing of momentum-resolved STEM data for first moment imaging and ptychography
Achim Strauch, Dieter Weber, Alexander Clausen +8
A reformulated implementation of single-sideband ptychography enables analysis and display of live detector data streams in 4D scanning transmission electron microscopy (STEM) usin…
Extraordinary high room-temperature carrier mobility in graphene-WSe heterostructures
L. Banszerus, T. Ouaj, T. Sohier +16
High charge carrier mobilities play a fundamental role for high-frequency electronics, integrated optoelectronics as well as for sensor and spintronic applications, where device pe…
Spectroscopic coincidence experiments in transmission electron microscopy
Daen Jannis, Knut Müller-Caspary, Armand Béché +2
We demonstrate the feasibility of coincidence measurements in a conventional transmission electron microscope, revealing the temporal correlation between electron energy loss spect…
Demonstration of a 2x2 programmable phase plate for electrons
Jo Verbeeck, Armand Béché, Knut Müller-Caspary +3
First results on the experimental realisation of a 2x2 programmable phase plate for electrons are presented. The design consists of an array of electrostatic einzel lenses that inf…
Reconstruction of nuclear quadrupole interaction in (In,Ga)As/GaAs quantum dots observed by transmission electron microscopy
P. S. Sokolov, M. Yu. Petrov, T. Mehrtens +4
A microscopic study of the individual annealed (In,Ga)As/GaAs quantum dots is done by means of high-resolution transmission electron microscopy. The Cauchy-Green strain-tensor comp…