Ultrafast optical studies of single-layer transition metal dichalcogenides and related heterostructures.

Dal Conte S.

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II - Fisica della materia
GSSI Ex ISEF - Aula C - Giovedì 26 h 09:00 - 12:30
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2D transition metal dichalcogenides (TMDs) are forefront materials in the field of electronics, optoelectronics and photonics. In this contribution, I will focus on the non-equilibrium optical response of 2D TMDs. I will show that the non-linear optical response of such materials exhibits strong signature of many-body interactions such as the band-gap renormalization process. By using time-resolved Kerr/Faraday rotation and circular dichroism techniques, I will give an overview of the inter and intravalley relaxation processes occurring in 2D TMDs. In the last part of the contribution, I will show recent results on charge transfer processes and spin/valley dynamics in TMD-based heterostructures.

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