SFB 1238 | June 19, 14:00
The rich world of two-dimensional semiconductors: on moiré physics, magnetism, and strong light-matter interaction
Since the discovery of graphene in 2004, a plethora of two-dimensional (2D) quantum materials has been investigated. Among 2D semiconductors, transition metal dichalcogenides have been of particular interest due to their direct band gap in the monolayer, large exciton binding energies, and strong light-matter interaction. Within the class of 2D magnets, air-stable CrSBr stands out as an antiferromagnetic semiconductor with a high Néel temperature and excitons coupled to the magnetic order. In this talk, I will present three of my postdoctoral projects. First, I will introduce moiré physics and show large-area atomic reconstruction in MoSe2-WSe2 heterobilayers [1]. The second part will be about doping-control of excitons and magnetism in few-layer magnetic semiconductor CrSBr [2]. Lastly, I will show different realizations of polariton microcavities with monolayers of transition metal dichalcogenides [3]. References: [1] Z. Li, F. Tabataba-Vakili, S. Zhao et al., Nano Lett. 23, 4160 (2023). [2] F. Tabataba-Vakili et al., Nat. Commun. 15, 4735 (2024). [3] F. Tabataba-Vakili, L. Krelle et al., arXiv:2402.09037 (2024).
Ludwig-Maximilians-Universität München
Seminar Room of the Institute of Physics II
Contact: Erwann/Matteo