Speaker
Description
I will present our theoretical work that aims at revealing systematic trends and developing intuition across the entire family of 2D transition metal dichalcogenides (TMDs). I will address the relevance of the crystal and ligand fields in determining the relative stability of 1T and 1H polymorphs and introduce a unified picture of lattice instabilities (charge-density-wave and strong-coupling regime) in metallic TMDs. The rest of my talk will focus on two particular realisations of topological and magnetic phases. I will discuss the well-ordered 1T’-1H heterojunctions experimentally observed in WSe$_2$ in relation to the quantum spin Hall interface states and present the observation of magnetic ordering and magnetoresistive switching in few-layer PtSe$_2$ that realises a new scenario in magnetic 2D materials.
