Two-dimensional elemental Ca sd2 Dirac honeycomb
A Pitt Physics seminar
Abstract: The discovery of graphene inaugurated research on the novel relativistic and topological electronic properties of 2D honeycomb quantum materials. One wonders whether other elemental graphene analogues beyond the group 4a elements exist. Motivated by revolutionary exploration of the synthesis and electronic characterization in Xenes, we address whether metallic elements can also embody similar molecular and electronic structures. We find that alkaline earth Ca monolayer (calcene) on Cu(111) indeed forms a new 2D honeycomb...