“…[41] With MBE, researchers have even realized the synthesis of a series of one-unit-cell-thick monatomic (silicene, germanene, stanene, hafnene, borophene, phosphorene, bismuthene, and antimonene) and diatomic (hexagonal boron nitride, transition metal dichalcogenides, copper selenide, silver telluride, and FeSe) semiconductors and superconductors up to now. [42,43] However, the MBE falls short when coming to complex oxides with high melting point. In order to evaporate these source materials, researchers brought intense laser into MBE, and thus developed laser-MBE.…”