Berlin 2018 – wissenschaftliches Programm

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HL: Fachverband Halbleiterphysik

HL 38: 2D materials: Chalcogenides II (joint session HL/DS)

HL 38.2: Vortrag

Donnerstag, 15. März 2018, 09:45–10:00, A 151

Microscopic description of localized quantum-dot-like states in MoS2 nanobubbles — •Christian Carmesin, Matthias Florian, Michael Lorke, Daniel Erben, and Frank Jahnke — Institute for Theoretical Physics, University of Bremen, Germany

Atomically thin layers of transition metal dichalcogenides (TMDCs) have emerged as a new class of optically active materials with recent applications reaching into the quantum-information technologies. The systematic engineering of local confinement potentials opens the possibility of the deterministic generation of single-photons. A possible platform are TMDC nanobubbles that develop if air is enclosed during the stacking of layers. We report on results of atomistic tight-binding calculations of different sizes and height-to-diamter ratios of these nanostructures and show that the formation of confined quantum-dot-like single-particle states is caused by an interplay of strain and dielectric screening.