Recently, Prof. Zheng Xiaohong’s research group from the Institute of Solid State Physics (ISSP) of the Hefei Institute of Physical Science (HFIPS) predicted a new two-dimensional (2-D) tin dioxide (SnO2) monolayer phase (P-4 m2) via first-principles calculations.
Bulk SnO2 is an important n-type wide-bandgap (~3.6 eV) semiconductor and is widely used as electrode materials, chemical sensor components, etc. but systematic study of possible tin oxide phases in 2-D is still missing. In particular, given the claims of magnetism in SnO2 thin films, it is worth investigating whether a stable SnO2 2-D phase can be synthesized or magnetism can be induced.
In this research, the researchers provided direct evidence of a stable and