31 citations · 85 across the 16 of their papers we have counts for
17 papers
Spectroscopic signatures of persistent exciton condensation in a bulk magnetic topological insulator
Paulina Majchrzak, Chakradhar Sahoo, Manuel Tuniz +7
Exciton condensates are long-sought correlated quantum states arising from macroscopic coherence of bound electron-hole pairs. Although equilibrium and transient excitonic states h…
Photoinduced Electronic Band Dynamics and Defect-mediated Surface Potential Evolution in PdSe
Omar Abdul-Aziz, Manuel Tuniz, Wibke Bronsch +9
We use time- and angle-resolved photoemission spectroscopy (TR-ARPES) combined with density functional theory to investigate ultrafast carrier dynamics in low-symmetry layered semi…
Quench of the electronic order in a strongly-coupled charge-density-wave system by enhanced lattice fluctuations
Manuel Tuniz, Denny Puntel, Wibke Bronsch +5
Charge-density-wave (CDW) materials having a strong electron-phonon coupling provide a powerful platform for investigating the intricate interplay between lattice fluctuations and…
Unveiling exciton formation: exploring the early stages in time, energy and momentum domain
Valentina Gosetti, Jorge Cervantes-Villanueva, Selene Mor +9
Resolving the early-stage dynamics of exciton formation following non-resonant photoexcitation in time, energy, and momentum is quite challenging due to their inherently fast times…
Impact of a monolayer on the nanoscale thermoelastic response of silicon heterostructures
Davide Soranzio, Denny Puntel, Manuel Tuniz +18
Understanding the thermoelastic response of a nanostructure is crucial for the choice of materials and interfaces in electronic devices with improved and tailored transport propert…
Ultrafast Band Structure Dynamics in Bulk 1-VSe
Wibke Bronsch, Manuel Tuniz, Denny Puntel +4
Complex materials encompassing different phases of matter can display new photoinduced metastable states differing from those attainable under equilibrium conditions. These states…
Unveiling the physics of the spin-orbit coupling at the surface of a model topological insulator: from theory to experiments
Denny Puntel, Simone Peli, Wibke Bronsch +4
Spin-orbit interaction affects the band structure of topological insulators beyond the opening of an inverted gap in the bulk bands, and the understanding of its effects on the sur…
Local work-function manipulation by external optical stimulation
Jan Böhnke, Beatrice Andres, Larissa Boie +4
Strongly differing static dipole moments of the trans and cis isomers of photochromic azobenzene allow for optical switching the work function of azobenzene-functionalized self-ass…
Out-of-equilibrium charge redistribution in a copper-oxide based superconductor by time-resolved X-ray photoelectron spectroscopy
Denny Puntel, Dmytro Kutnyakhov, Lukas Wenthaus +10
Charge-transfer excitations are of paramount importance for understanding the electronic structure of copper-oxide based high-temperature superconductors. In this study, we investi…
Photoinduced dynamics of flat bands in the kagome metal CoSn
Denny Puntel, Wibke Bronsch, Manuel Tuniz +8
CoSn is a prototypical kagome compound showing lattice-born flat bands with suppressed bandwidth over large parts of the Brillouin zone. Here, by means of time- and angle-resolved…
Ultrafast all-optical manipulation of the charge-density-wave in VTe
Manuel Tuniz, Davide Soranzio, Davide Bidoggia +6
The charge-density wave (CDW) phase in the layered transition-metal dichalcogenide VTe is strongly coupled to the band inversion involving vanadium and tellurium orbitals. In…
Dynamics and Resilience of the Charge Density Wave in a bilayer kagome metal
Manuel Tuniz, Armando Consiglio, Denny Puntel +22
Long-range electronic order descending from a metallic parent state constitutes a rich playground to study the intricate interplay of structural and electronic degrees of freedom.…
Van der Waals engineering of ultrafast carrier dynamics in magnetic heterostructures
Paulina Majchrzak, Yuntian Liu, Klara Volckaert +10
Heterostructures composed of the intrinsic magnetic topological insulator MnBiTe and its non-magnetic counterpart BiTe host distinct surface electronic band structu…
Ultrafast dynamics in (TaSe)I triggered by valence and core-level excitation
Wibke Bronsch, Manuel Tuniz, Giuseppe Crupi +16
In this work, we study the out-of-equilibrium dynamics of the paradigmatic quasi-one-dimensional material (TaSe)I, that exhibits a transition into an incommensurate CDW pha…
Ultrafast manipulation of the NiO antiferromagnetic order via sub-gap optical excitation
Xiaocui Wang, Robin Y. Engel, Igor Vaskivskyi +19
Wide-band-gap insulators such as NiO offer the exciting prospect of coherently manipulating electronic correlations with strong optical fields. Contrary to metals where rapid depha…
Optical control of 4f orbital state in rare-earth metals
N. Thielemann-Kühn, T. Amrhein, W. Bronsch +28
A change of orbital state alters the coupling between ions and their surroundings drastically. Orbital excitations are hence key to understand and control interaction of ions. Rare…
Photoinduced nematic state in FeSeTe
Laura Fanfarillo, Damir Kopić, Andrea Sterzi +8
FeSeTe compounds present a complex phase diagram, ranging from the nematicity of FeSe to the magnetism of FeTe. We focus on FeSeTe, where the…