Speaker
Francesco Petocchi
Description
The layered transition metal dichalcogenide 1$T$-TaS$_2$ has been studied intensively due to the interplay between structural transitions and the associated electronic phases. In the low temperature regime the monolayer behaves as a Mott insulator, while, when the bulk is considered, the electronic state is influenced by the presence of a strong bilayer hybridization favouring a band insulator groundstate. Recent equilibrium calculatons revealed that, depending on the sample termination, Mott physics is confined to the surface of the system. Starting from DFT-derived hoppings, we incorporate the effect of a realistic pulse excitation and study the production and diffusion of charge carriers in a layered setup.
Authors
Francesco Petocchi
Mr
Jiyu Chen
(Fribourg University)
