Towards complete band structure of microscopic MoS 2 flakes

Sergey Babenkov , Marie Froidevaux (1) , Peng Ye , Ludovic Tortech , Yannick Dappe (2, 3, 4) , Willem Boutu (5, 6) , Nickolas Barrett (2, 3, 7) , Hamed Merdji (1)

1 LOA - Laboratoire d'optique appliquée
2 CEA - CEA- Saclay
3 SPEC - UMR3680 - Service de physique de l'état condensé
4 GMT - Groupe Modélisation et Théorie
5 LIDYL - CY Cergy Paris Université, CEA, LIDYL, 91191 Gif-sur-Yvette, France
6 DICO - Dynamique et Interactions en phase Condensée
7 LENSIS - Laboratoire d'Etude des NanoStructures et Imagerie de Surface

The occupied and unoccupied electronic states of MoS2 monolayer isolated flake were studied using laboratory based photoemission electron microscope (PEEM) nanoESCA equipped with He-I photon source. PEEM real-space imaging allowed selecting the high quality flake. Altogether, the data will allow accurately recovering the band structures of MoS2. The band structures will be used in future pump-probe experiments to explore the dynamics of electrons in the conduction band and photo-induced multitopological states using trefoil polarization.

Domaines: Physique [physics]

Sergey Babenkov, Marie Froidevaux, Peng Ye, Ludovic Tortech, Yannick Dappe, et al.. Towards complete band structure of microscopic MoS 2 flakes. EPJ Web of Conferences, 2022, 273, pp.01006. ⟨10.1051/epjconf/202227301006⟩. ⟨cea-04338395⟩