A. Donarini
J. Repp
R. Huber

Spin-orbit-induced dynamics in atomic-scale systems

Based on lightwave-driven scanning tunnelling microscopy, atomic-scale femtosecond slow-motion pictures of spin-orbit induced electron dynamics are targeted in individual molecules and native defects in transition metal dichalcogenide monolayers. These experiments may also enable the first spatiotemporal resolution of moiré excitons. The corresponding theoretical description will directly proceed in the time domain with the help of generalized m... | show all >> show all members>>

J. Lupton
S. Bange

High-frequency magnetic resonance of molecular spin systems

Magnetic resonance spectroscopy offers a way to probe electronic spin states either directly, through absorption and emission of electromagnetic radiation, or indirectly, through a change in macroscopic observables such as electrical conductivity or light emission intensity. The higher the frequency of the resonant radiation, the greater the spectral resolution achievable, enabling a differentiation between hyperfine and spin-orbit coupling (SOC)... | show all >> show all members>>

J. Lupton
C. Schüller

Moiré materials with strong spin-orbit coupling

Project B05 investigates the impact of moiré superlattices on electronic excitations in tunable TMDC hetero-bilayers and homo-multilayers using electronic Raman scattering. Part A focuses on low-energy excitations of correlated states like Mott insulators and Wigner crystals in doped MoSe2/WS2 structures. In part B, electrically tunable intersubband transitions in multilayers, split by spin-orbit coupling, are investigated, which enable probing ... | show all >> show all members>>

J. Fabian

Interplay of spin-orbit coupling and magnetism in 2D materials

The project employs first-principles simulations, phenomenological modeling, and machine-learning tools to explore proximity-induced spin–orbit coupling and magnetism in large-scale graphene-based van der Waals heterostructures. Particular attention is given to the effects of non-uniform strain, which are expected to generate novel spin–orbit textures. In parallel, the project investigates electron spin dynamics and the superconducting diode ... | show all >> show all members>>

M. Grifoni
J. Schliemann

Interplay of spin-orbit coupling and superconductivity in few-layer transition metal dichalcogenides

Project B09 aims at providing a microscopic understanding of the underlying mechanism for superconductivity, and its interplay with Ising spin-orbit coupling, in a selected class of transition metal dichalcogenides (TMDCs)-based systems. The project is divided in two intercorrelated yet complementary work packages, WP1 and WP2, focusing on monolayer and twisted bilayer systems, respectively, and for which the leading pairing mechanism is still un... | show all >> show all members>>

I. Gierz-Pehla
S. Sharma

Non-equilibrium carrier dynamics and band structure of TMDCs

The main goal of this proposal is to control the band structure of layered transition metal dichalcogenides with light. For that purpose, we will explore selective phononic excitation using tailored femtosecond laser pulses in the terahertz spectral range that we will combine with a time- and angle-resolved photoemission probe to gain access to the transient electronic structure. The experimental work will be closely intertwined with ab initio ti... | show all >> show all members>>

J. Wunderlich
M. Kronseder

Optically induced non-linear magnetotransport in compensated magnets

We recently discovered the quantum metric nonlinear anomalous Hall effect (nl-AHE) in antiferromagnets preserving combined parity and time reversal symmetry (PT-AFs). It arises from electric field-induced Berry curvature and correlates with the antiferromagnetic order by reversing sign upon Néel vector inversion. Project B12 extends the nl-AHE to the optical regime, where it is predicted as a transverse to the Néel vector oriented DC photocurre... | show all >> show all members>>