  The conventional understanding has always been that noble gases are
chemically inert and do not affect materials properties. This belief has led to
their use as a standard reference in various experimental applications through
noble gas implantation. However, in our research, using first-principles
calculations, we delve into the effects of noble gas defects on the properties
of several functional oxides, thereby questioning this long-held assumption. We
provide evidence that noble gases can indeed serve as functional defects. They
have the potential to decentralize the localized defect states and prompt a
shift of electrons from a localized state to the main conduction band. Our
investigation unveils that noble gas defects can indeed significantly alter
material properties. Thus, we underscore the importance of factoring in such
defects when assessing material properties.
