Atomically thin layered crystals have received great attention due to their fascinating physical properties. By deterministic stacking and twisting of these two-dimensional (2D) materials, an almost unlimited variety of material’s combinations and resulting physical properties can be achieved.
The properties can be further modified by chemical functionalization of the surface. In this talk I will present recent experimental and theoretical results on the optical and vibrational properties of such 2D materials and heterostructures. In few-layer structures of transition-metal dichalcogenides (TMDCs), we discuss simulations of interlayer excitons.
Furthermore, we propose novel 2D antimony oxide structures which show tunable electronic properties depending on the oxygen content.
Finally, based on recent experiments on chemically functionalized MoS2 layers, we present transitions from the 2H to the 1T’ phase along with the characteristic phonon modes of the 1T’ phase of MoS2.
25. Juni 2021, 14:00-15:30
Online per Zoom
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