61 citations · 362 across the 15 of their papers we have counts for
12 papers · 1 filter
Coherent two-dimensional electronic spectroscopy integrated with confocal back focal plane microscopy
Trideep Kawde, Pavel Trofimov, Anton Trenczek +3
We introduce a setup for coherent two-dimensional electronic spectroscopy in the pump-probe reflection geometry that is integrated with a confocal back focal plane imaging microsco…
Momentum-Resolved Signatures of Carrier Screening Effects on Electron-Phonon Coupling in MoS
Yiming Pan, Patrick-Nigel Hildebrandt, Daniela Zahn +5
Electron-phonon coupling is central to many condensed matter phenomena. Harnessing these effects for novel material functionality in materials always involves non-equilibrium elect…
Element-specific ultrafast lattice dynamics in monolayer WSe2
H. Jung, S. Dong, D. Zahn +8
We study monolayer WSe2 using ultrafast electron diffraction. We introduce an approach to quantitatively extract atomic-site-specific information, providing an element-specific vie…
Direct observation of ultrafast lattice distortions during exciton-polaron formation in lead-halide perovskite nanocrystals
Hélène Seiler, Daniela Zahn, Victoria C. A. Taylor +4
The microscopic origin of slow carrier cooling in lead-halide perovskites remains debated, and has direct implications for applications. Slow carrier cooling has been attributed to…
Intrinsic energy flow in laser-excited 3 ferromagnets
Daniela Zahn, Florian Jakobs, Hélène Seiler +6
Ultrafast magnetization dynamics are governed by energy flow between electronic, magnetic, and lattice degrees of freedom. A quantitative understanding of these dynamics must be ba…
Photoinduced ultrafast transition of the local correlated structure in chalcogenide phase-change materials
Yingpeng Qi, Nianke Chen, Thomas Vasileiadis +4
Revealing the bonding and time-evolving atomic dynamics in functional materials with complex lattice structures can update the fundamental knowledge on rich physics therein, and al…
Traversing double-well potential energy surfaces: photoinduced concurrent intralayer and interlayer structural transitions in XTe2 (X=Mo, W)
Yingpeng Qi, Mengxue Guan, Daniela Zahn +6
Manipulating crystal structure and the corresponding electronic properties in quantum materials provides opportunities for the exploration of exotic physics and practical applicati…
Multi-phonon diffuse scattering in solids from first-principles: Application to layered crystals and 2D materials
Marios Zacharias, Hélène Seiler, Fabio Caruso +4
Time-resolved diffuse scattering experiments have gained increasing attention due to their potential to reveal non-equilibrium dynamics of crystal lattice vibrations with full mome…
Efficient first-principles methodology for the calculation of the all-phonon inelastic scattering in solids
Marios Zacharias, Hélène Seiler, Fabio Caruso +4
Inelastic scattering experiments are key methods for mapping the full dispersion of fundamental excitations of solids in the ground as well as non-equilibrium states. A quantitativ…
Ultrafast lattice dynamics and electron-phonon coupling in platinum extracted with a global fitting approach for time-resolved polycrystalline diffraction data
Daniela Zahn, Hélène Seiler, Yoav William Windsor +1
Quantitative knowledge of electron-phonon coupling is important for many applications as well as for the fundamental understanding of nonequilibrium relaxation processes. Time-reso…
Lattice dynamics and ultrafast energy flow between electrons, spins, and phonons in a 3d ferromagnet
Daniela Zahn, Florian Jakobs, Yoav William Windsor +8
The ultrafast dynamics of magnetic order in a ferromagnet are governed by the interplay between electronic, magnetic and lattice degrees of freedom. In order to obtain a microscopi…
Anisotropic Nonequilibrium Lattice Dynamics of Black Phosphorus
Daniela Zahn, Patrick-Nigel Hildebrandt, Thomas Vasileiadis +4
Black phosphorus has recently attracted significant attention for its highly anisotropic properties. A variety of ultrafast optical spectroscopies has been applied to probe the car…