Abstract
Two-dimensional (2D) layered semiconductors such as molybdenum (Mo)- and tungsten (W)-based transitionmetal dichalcogenides (TMDCs) have been model systems to explore various quantum many-body processes owing to the strong confinement of carriers and phonons in each atomic layer. The confinement effect in semiconductor TMDCs strongly modifies the electronic and optical properties via the generation of strongly bound excitons or large band-gap renormalization (BGR) in the presence of unbound electron-hole (e–h) plasma under irradiation of ultrashort intense laser pulses [1]. The generation of the e–h pairs and electron-phonon coupling in semiconductors generally appears immediately after photoexcitation within < 1 ps [2,3]. Therefore, it is crucial to investigate the ultrafast optical response to gain insight into non-equilibrium quasiparticle dynamics in 2D semiconductors.
© 2023 IEEE
PDF ArticleMore Like This
Kotaro Makino, Yuta Saito, Paul Fons, Alexander V. Kolobov, Keiji Ueno, and Muneaki Hase
20p_E214_14 JSAP-OSA Joint Symposia (JSAP) 2019
Takumi Fukuda, Kotaro Makino, Yuta Saito, Paul Fons, Alexander V. Kolobov, Atsushi Ando, Takuya Mori, Ryo Ishikawa, Keiji Ueno, Jessica Afalla, and Muneaki Hase
Tu4A.7 International Conference on Ultrafast Phenomena (UP) 2022
Thomas Deckert and Daniele Brida
ei_4_3 European Quantum Electronics Conference (EQEC) 2023