“…There is currently interest in the electronic and optical properties of van der Waals (vW) crystals [1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26]. Bulk van der Waals crystals are found to be insulators, metals, ferromagnets, superconductors and semiconductors.…”