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Conferences > EQEC > 2019 > ee_3 > ee_3_5
  • 2019 Conference on Lasers and Electro-Optics Europe and European Quantum Electronics Conference
  • OSA Technical Digest (Optica Publishing Group, 2019),
  • paper ee_3_5

Excitonic Effects in Single Layer MoS2 Probed by Broadband Two-dimensional Electronic Spectroscopy

Margherita Maiuri, Stefano Dal Conte, Mattia Russo, Junjia Wang, Giancarlo Soavi, Dumitru Dumcenco, Andras Kis, Malte Selig, Sandra Khun, Marten Richter, Andreas Knorr, Andrea C. Ferrari, and Giulio Cerullo

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Abstract

Atomically thin Transition-metal dichalcogenides (TMDs) have come into the spotlight in optoelectronics thanks to their outstanding physical properties [1,2]. In single-layer (1L) TMDs strong quantum confinement effects cause a weak screening of Coulomb, so that the excitons created by photo-excitation have large binding energy, up to several hundred meVs [3]. While the steady-state properties of TMDCs have been studied in detail by linear optical techniques, the recent application of time-resolved nonlinear spectroscopy (mainly ultrafast pump-probe) has enabled the study of excited-state dynamics on femtosecond timescales [4] opening up questions about the mechanisms of exciton relaxations and exciton-exciton interactions.

© 2019 IEEE

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