400 citations · 617 across the 9 of their papers we have counts for
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Ultrafast signatures of Dirac / flat-band hybrid states from time-resolved ARPES
Maria-Elisabeth Federl, Johannes Gradl, Franziska Bergmeier +12
Hybridization of highly itinerant Dirac electrons with localized flat-band states is predicted to yield emergent phenomena such as exotic heavy-fermion behaviour. Epitaxial graphen…
Influence of twist angle on ultrafast charge separation in WS2-graphene heterostructures
Niklas Hofmann, Leonard Weigl, Johannes Gradl +4
Van der Waals (vdW) heterostructures, formed by stacking two-dimensional materials, offer highly tunable electronic and optical properties, with the twist angle between layers acti…
Direct evidence for efficient carrier multiplication in the topological insulator BiSe
Michael Herb, Leonard Weigl, Niklas Hofman +4
Carrier multiplication (CM), where the absorption of a single photon results in the generation of several electron-hole pairs via impact ionization, plays a pivotal role in the que…
k-resolved ultrafast light-induced band renormalization in monolayer WS on graphene
Niklas Hofmann, Alexander Steinhoff, Razvan Krause +6
Understanding and controlling the electronic properties of two-dimensional materials is crucial for their potential applications in nano- and optoelectronics. Monolayer transition…
On the survival of Floquet-Bloch states in the presence of scattering
S. Aeschlimann, S. A. Sato, R. Krause +9
Floquet theory has spawned many exciting possibilities for electronic structure control with light with enormous potential for future applications. The experimental realization in…
Direct evidence for efficient ultrafast charge separation in epitaxial WS/graphene heterostructure
S. Aeschlimann, A. Rossi, M. Chávez-Cervantes +8
We use time- and angle-resolved photoemission spectroscopy (tr-ARPES) to investigate ultrafast charge transfer in an epitaxial heterostructure made of monolayer WS and graphene…