64 citations · 110 across the 10 of their papers we have counts for
11 papers
Ultrafast order-selective electron imaging and spectroscopy
Jan Philipp Bange, Till Domröse, Claus Ropers +3
Ultrafast pump-probe spectroscopies in energy and momentum have become indispensable for probing non-equilibrium dynamics in quantum materials, revealing pathways in ultrafast ener…
A comparative study of perturbative and nonequilibrium Green's function approaches for Floquet sidebands in periodically driven quantum systems
Karun Gadge, Marco Merboldt, Michael Schüler +6
We compare two complementary theoretical approaches to compute and interpret Floquet sidebands in periodically driven quantum materials: a first-order perturbative approach (first-…
ARPES signatures of trions in van der Waals materials
Giuseppe Meneghini, Maja Löwe, Raul Perea-Causin +5
Angle-resolved photoemission spectroscopy (ARPES) has recently emerged as a direct probe of excitonic correlations in two-dimensional semiconductors, resolving their dispersion and…
Table-top three-dimensional photoemission orbital tomography with a femtosecond extreme ultraviolet light source
Wiebke Bennecke, Thi Lan Dinh, Jan Philipp Bange +11
Following electronic processes in molecules and materials at the level of the quantum mechanical electron wavefunction with angstrom-level spatial resolution and with full access t…
Algorithmic approaches to avoiding bad local minima in nonconvex inconsistent feasibility
Thi Lan Dinh, Wiebke Bennecke, G. S. Matthijs Jansen +2
We report on the use of algorithms to avoid or move away from ``bad'' local minima in nonconvex optimization. Our study is phenomenological and empirical, focusing on the performan…
Hybrid Frenkel-Wannier excitons facilitate ultrafast energy transfer at a 2D-organic interface
Wiebke Bennecke, Ignacio Gonzalez Oliva, Jan Philipp Bange +13
Two-dimensional transition metal dichalcogenides (TMDs) and organic semiconductors (OSCs) have emerged as promising material platforms for next-generation optoelectronic devices. T…
Fast spectroscopic imaging using extreme ultraviolet interferometry
Hannah C. Strauch, Fengling Zhang, Stefan Mathias +3
Extreme ultraviolet pulses as generated by high harmonic generation (HHG) are a powerful tool for both time-resolved spectroscopy and coherent diffractive imaging. However, the int…
Probing excitons with time-resolved momentum microscopy
Marcel Reutzel, G. S. Matthijs Jansen, Stefan Mathias
Excitons -- two-particle correlated electron-hole pairs -- are the dominant low-energy optical excitation in the broad class of semiconductor materials, which range from classical…
A minimalist approach to 3D photoemission orbital tomography: algorithms and data requirements
Thi Lan Dinh, G. S. Matthijs Jansen, D. Russell Luke +2
Photoemission orbital tomography provides direct access from laboratory measurements to the real-space molecular orbitals of well-ordered organic semiconductor layers. Specifically…
Probing correlations in the exciton landscape of a moiré heterostructure
Jan Philipp Bange, David Schmitt, Wiebke Bennecke +13
Excitons are two-particle correlated bound states that are formed due to Coulomb interaction between single-particle holes and electrons. In the solid-state, cooperative interactio…
Time-Resolved Momentum Microscopy with a 1 MHz High-Harmonic Extreme Ultraviolet Beamline
M. Keunecke, C. Möller, D. Schmitt +8
Recent progress in laser-based high-repetition rate extreme ultraviolet (EUV) lightsources and multidimensional photoelectron spectroscopy enable the build-up of a new generation o…