Probing excitons with time-resolved momentum microscopy

M Reutzel, GSM Jansen, S Mathias - Advances in Physics: X, 2024‏ - Taylor & Francis
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 silicon …

Perspective: Floquet engineering topological states from effective models towards realistic materials

F Zhan, R Chen, Z Ning, DS Ma, Z Wang, DH Xu… - Quantum …, 2024‏ - Springer
With significant advances in classifying and cataloguing topological matter, the focus of
topological physics has shifted towards quantum control, particularly the creation and …

Dispersive nodal fermions along grain boundaries in Floquet topological crystals

DJ Salib, B Roy - Scientific Reports, 2025‏ - nature.com
Driven quantum materials often feature emergent topology, otherwise absent in static
crystals. Dynamic bulk-boundary correspondence, encoded by nondissipative gapless …

Floquet–Bloch manipulation of the Dirac gap in a topological antiferromagnet

N Bielinski, R Chari, J May-Mann, S Kim, J Zwettler… - Nature Physics, 2025‏ - nature.com
Floquet–Bloch manipulation, achieved by driving a material periodically with a laser pulse,
is a method that enables the engineering of electronic and magnetic phases in solids by …

Floquet Quantum Anomalous Hall Effect with Tunable and High Chern Numbers in Two-Dimensional Antiferromagnet KMnBi

Y Zhang, R Li, Y Bai, Z Zhang, B Huang, Y Dai… - Nano Letters, 2025‏ - ACS Publications
The quantum anomalous Hall effect (QAHE) holds significant fundamental and technological
importance in low-dissipation spintronics. We employ a tight-binding model and first …

Distinct light-matter coupling mechanisms in : Crossover from above-gap photoexcitation to light-field dressing

W Chen, F Wang, T Lin, H Zhong, S Zhou, C Bao… - Physical Review B, 2024‏ - APS
Ultrashort laser pulses can be used to manipulate quantum materials and probe the ultrafast
dynamics, where the pump photon energy can strongly affect the light-matter coupling …

Time evolution of the local density of states of strongly correlated fermions coupled to a nanoprobe

T Blum, RM Noack, SR Manmana - Physical Review B, 2025‏ - APS
We study the time evolution of a one-dimensional system of strongly correlated electrons (a
“sample”) that is suddenly coupled to a smaller, initially empty system (a “nanoprobe”) …

Chiral Floquet engineering on topological fermions in chiral crystals

B Fan, W Duan, A Rubio, P Tang - npj Quantum Materials, 2024‏ - nature.com
The interplay of chiralities in light and quantum matter provides an opportunity to design and
manipulate chirality-dependent properties in quantum materials. Herein we report the …

Time-resolved photoelectron spectroscopy at surfaces

M Aeschlimann, JP Bange, M Bauer, U Bovensiepen… - Surface Science, 2025‏ - Elsevier
Light is a preeminent spectroscopic tool for investigating the electronic structure of surfaces.
Time-resolved photoelectron spectroscopy has mainly been developed in the last 30 years …

Engineering Floquet Moiré Patterns for Scalable Photocurrents

HL Calvo, LEF Foa Torres, M Berdakin - Nano Letters, 2025‏ - ACS Publications
While intense laser irradiation and moiré engineering have independently proven powerful
for tuning material properties on demand in condensed matter physics, their combination …