A New Group of 2D Non‐van der Waals Materials with Ultra Low Exfoliation Energies
A New Group of 2D Non‐van der Waals Materials with Ultra Low Exfoliation Energies
Abstract The exfoliation energy—quantifying the energy required to extract a two‐dimensional (2D) sheet from the surface of a bulk material—is a key parameter determining the synthesizability of 2D compounds. Here, using ab initio calculations, a new group of non‐van der Waals 2D materials derived from non‐layered crystals that exhibit ultra …