217 citations · 3.2k across the 52 of their papers we have counts for
57 papers
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…
Berry Curvature Signatures in Chiroptical Excitonic Transitions
Samuel Beaulieu, Shuo Dong, Viktor Christiansson +10
The topology of the electronic band structure of solids can be described by its Berry curvature distribution across the Brillouin zone. We theoretically introduce and experimentall…
Observation of multi-directional energy transfer in a hybrid plasmonic-excitonic nanostructure
Tommaso Pincelli, Thomas Vasileiadis, Shuo Dong +15
Hybrid plasmonic devices involve a nanostructured metal supporting localized surface plasmons to amplify light-matter interaction, and a non-plasmonic material to functionalize cha…
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…
Angle-resolved photoemission spectroscopy
Hongyun Zhang, Tommaso Pincelli, Chris Jozwiak +4
For solid-state materials, the electronic structure, E(k), is critical in determining a crystal's physical properties. By experimentally detecting the electronic structure, the fun…
Coherent Light Control of a Metastable Hidden Phase
J. Maklar, S. Dong, J. Sarkar +13
Metastable phases present a promising route to expand the functionality of complex materials. Of particular interest are light-induced metastable phases that are inaccessible under…
Field-induced ultrafast modulation of Rashba coupling at room temperature in ferroelectric -GeTe(111)
Geoffroy Kremer, Julian Maklar, Laurent Nicolaï +11
Rashba materials have appeared as an ideal playground for spin-to-charge conversion in prototype spintronics devices. Among them, -GeTe(111) is a non-centrosymmetric ferroelectr…
Orbital-resolved Observation of Singlet Fission
Alexander Neef, Samuel Beaulieu, Sebastian Hammer +8
Singlet fission may boost photovoltaic efficiency [by transforming a singlet exciton into two triplet excitons and thereby doubling the number of excited charge carriers. The prima…
Probing the energy conversion pathways between light, carriers and lattice in real time with attosecond core-level spectroscopy
T. P. H. Sidiropoulos, N. Di Palo, D. E. Rivas +16
Detection of the energy conversion pathways, between photons, charge carriers, and the lattice is of fundamental importance to understand fundamental physics and to advance materia…
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…
Excited-state band structure mapping
M. Puppin, C. W. Nicholson, C. Monney +10
Angle-resolved photoelectron spectroscopy is an extremely powerful probe of materials to access the occupied electronic structure with energy and momentum resolution. However, it r…
Coherent Modulation of Quasiparticle Scattering Rates in a Photoexcited Charge-Density-Wave System
J. Maklar, M. Schüler, Y. W. Windsor +8
We present a complementary experimental and theoretical investigation of relaxation dynamics in the charge-density-wave (CDW) system TbTe after ultrafast optical excitation. Us…
Ultrafast Momentum-resolved Hot Electron Dynamics in the Two-dimensional Topological Insulator Bismuthene
J. Maklar, R. Stühler, M. Dendzik +9
Two-dimensional quantum spin Hall (QSH) insulators are a promising material class for spintronic applications based on topologically-protected spin currents in their edges. Yet, th…
Observation of ultrafast interfacial Meitner-Auger energy transfer in a van der Waals heterostructure
Shuo Dong, Samuel Beaulieu, Malte Selig +23
Atomically thin layered van der Waals heterostructures feature exotic and emergent optoelectronic properties. With growing interest in these novel quantum materials, the microscopi…
Unveiling the Orbital Texture of 1T-TiTe using Intrinsic Linear Dichroism in Multidimensional Photoemission Spectroscopy
Samuel Beaulieu, Michael Schüler, Jakub Schusser +9
The momentum-dependent orbital character in crystalline solids, referred to as orbital texture, is of capital importance in the emergence of symmetry-broken collective phases such…
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…
Scalable multicomponent spectral analysis for high-throughput data annotation
Rui Patrick Xian, Ralph Ernstorfer, Philipp Michael Pelz
Orchestrating parametric fitting of multicomponent spectra at scale is an essential yet underappreciated task in high-throughput quantification of materials and chemical compositio…
Polarization-Modulated Angle-Resolved Photoemission Spectroscopy: Towards Circular Dichroism without Circular Photons and Bloch Wavefunction Reconstruction
Michael Schüler, Tommaso Pincelli, Shuo Dong +5
Angle-resolved photoemission spectroscopy (ARPES) is the most powerful technique to investigate the electronic band structure of crystalline solids. To completely characterize the…
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…
Machine Learning on Neutron and X-Ray Scattering
Zhantao Chen, Nina Andrejevic, Nathan Drucker +8
Neutron and X-ray scattering represent two state-of-the-art materials characterization techniques that measure materials' structural and dynamical properties with high precision. T…
Direct measurement of key exciton properties: energy, dynamics and spatial distribution of the wave function
Shuo Dong, Michele Puppin, Tommaso Pincelli +15
Excitons, Coulomb-bound electron-hole pairs, are the fundamental excitations governing the optoelectronic properties of semiconductors. While optical signatures of excitons have be…