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cond-mat.mtrl-sci2026
Dark exciton signatures in the infrared transient absorption of MoS monolayer
Tian-Xiang Qian, Marco D'Alessandro, Claudio Attaccalite +3
Dark excitons play a central role in the nonequilibrium dynamics of two-dimensional semiconductors, but remain difficult to characterize. Transient-absorption experiments, with pro…
cond-mat.mtrl-sci2021
Real-time ab initio description of the photon-echo mechanisms in extended systems: the case study of bulk GaAs
M. D'Alessandro, D. Sangalli
In this paper we present an ab initio real-time analysis of free polarization decay and photon echo in extended systems. As a prototype material, we study bulk GaAs driven by ultra…