First-principle study on the transport property of stanene films

Stanene, a single layer of tin atoms, is a newly discovered 2D material that has captured much attention due to its unique property. It is a quantum spin Hall (QSH) insulator with a sizable bulk gap of 0.1 eV. In this study, using first-principle calculation, the transport property of stanene is investigated and explored. A high electron mobility is observed, which is out of expectation given its buckled mono-layer structure. In addition, its thermoelectric property can be effectively tuned by chemical functionalization and external strain. Our study suggests that stanene might be a promising material for thermoelectric applications.