429 citations · 1.2k across the 11 of their papers we have counts for
11 papers
Electron Imaging of Nanoscale Charge Distributions Induced by Femtosecond Light Pulses
Jonathan T. Weber, Sascha Schäfer
Surface charging is a phenomenon ubiquitously observable in in-situ transmission electron microscopy of non-conducting specimens as a result of electron beam/sample interactions or…
Improving the temporal resolution of event-based electron detectors using neural network cluster analysis
Alexander Schröder, Leon van Velzen, Maurits Kelder +1
Novel event-based electron detector platforms provide an avenue to extend the temporal resolution of electron microscopy into the ultrafast domain. Here, we characterize the timing…
Broadband coupling of fast electrons to high-Q whispering-gallery mode resonators
Niklas Müller, Vincent Hock, Holger Koch +3
Transmission electron microscopy is an excellent experimental tool to study the interaction of free electrons with nanoscale light fields. However, up to now, applying electron mic…
Dynamics and Structure of Monolayer Polymer Crystallites on Graphene
Max Gulde, Anastassia N. Rissanou, Vagelis Harmandaris +3
Graphene-based nanostructured systems and van-der-Waals heterostructures comprise a material class of growing technological and scientific importance. Joining materials with vastly…
Nanoscale diffractive probing of strain dynamics in ultrafast transmission electron microscopy
Armin Feist, Nara Rubiano da Silva, Wenxi Liang +2
The control of optically driven high-frequency strain waves in nanostructured systems is an essential ingredient for the further development of nanophononics. However, broadly appl…
Nanoscale Magnetic Imaging using Circularly Polarized High-Harmonic Radiation
Ofer Kfir, Sergey Zayko, Christina Nolte +10
This work demonstrates nanoscale magnetic imaging using bright circularly polarized high-harmonic radiation. We utilize the magneto-optical contrast of worm-like magnetic domains i…
Attosecond Electron Pulse Trains and Quantum State Reconstruction in Ultrafast Transmission Electron Microscopy
Katharina E. Priebe, Christopher Rathje, Sergey V. Yalunin +4
We introduce a framework for the preparation, coherent manipulation and characterization of free-electron quantum states, experimentally demonstrating attosecond pulse trains for e…
Phase-ordering of charge density waves traced by ultrafast low-energy electron diffraction
S. Vogelgesang, G. Storeck, S. Schramm +3
We introduce ultrafast low-energy electron diffraction (ULEED) in backscattering for the study of structural dynamics at surfaces. Using a tip-based source of ultrashort electron p…
Ultrafast transmission electron microscopy using a laser-driven field emitter: femtosecond resolution with a high coherence electron beam
Armin Feist, Nora Bach, Nara Rubiano da Silva +12
We present the development of the first ultrafast transmission electron microscope (UTEM) driven by localized photoemission from a field emitter cathode. We describe the implementa…
A light induced metastable magnetic texture uncovered by in-situ Lorentz microscopy
Tim Eggebrecht, Marcel Möller, J. Gregor Gatzmann +7
Magnetic topological defects, including vortices and Skyrmions, can be stabilized as equilibrium structures by tuning intrinsic magnetic interactions and stray field geometries. He…
Kondo physics and orbital degeneracy interact to boost thermoelectrics on the nanoscale
J. Azema, A. -M. Daré, S. Schäfer +1
We investigate the transport through a nanoscale device consisting of a degenerate double-orbital Anderson dot coupled to two uncorrelated leads. We determine the thermoelectric tr…