Conveners
Session 4: Ab initio methods for non-equilibrium phenomena
- Davide Sangalli (Istituto di Struttura della Materia (ISM) - CNR)
Monolayers of Transition Metal Dichalcogenides (TMDs) have become a central focus in condensed matter physics research due to their exceptional optoelectronic properties, which arise from strong light-matter interactions. Quantum confinement and reduced Coulomb screening make TMDs an ideal system for studying excitons (i.e. ground state and excited state excitons) and their many-body complexes...
In this lecture I will present a general introduction to the exciton-phonon coupling problem with some application to phonon-assisted absorption/emission.
Exciton dynamics, encompassing ultrafast photogeneration, diffusion, and thermalization, plays a crucial role in optoelectronic, photovoltaic, and photocatalytic processes.
In this talk we discuss a novel many-body approach to describe exciton dynamics from first-principles. We show that the introduction of an auxiliary exciton species, termed “irreducible exciton”, is crucial to formulate a...
Two-dimensional (2D) materials have the potential to revolutionize the quantum technology industry by enabling the development of quantum information devices [1]. Defect centers in wide-bandgap semiconductors, such as transition metal dichalcogenides (TMDs), have been proposed as quantum bits (qubits) [2] and have been shown to behave as single photon emitters (SPE) [3]. Advances in this field...
Time-resolved angle-resolved photoemission spectroscopy (tr-ARPES) provides direct access to the non-equilibrium electronic structure of solids, combining sub-femtosecond temporal resolution with momentum-resolved spectral information. On the theoretical side, time-dependent density functional theory (TDDFT) has become a key ab-initio approach for modeling ultrafast processes in real...
