(National Centre of Competence in Research (NCCR) MARVEL) New collaborative work involving NCCR MARVEL researchers has given additional insight into the nature of jacutingaite (Pt2HgSe3), a species of platinum-group mineral first discovered in a Brazilian mine in 2008. The studies show that the material is one of only a few known dual-topological insulators, featuring different surface states linked to crystalline symmetries rather than to the topological properties of the 2D monolayer, a quantum spin Hall insulator (QSHI).

Original source: https://www.eurekalert.org/pub_releases/2020-03/ncoc-net031520.php