The curved magnetism is of great importance in flexomagnetic devices. CrI3, a two-dimensional magnetic material, has emerged as promising platforms for spintronic and quantum applications. Here we studied the impact of bending strain on the magnetic and electronic properties of monolayer CrI3using density functional theory. It was found that under small bending within a bending curvature of 0.033 Å-1, the monolayer CrI3is stable at a ferromagnetic state. Further increasing the bending curvature will trigger a transition to from the ferromagnetic state to antiferromagnetic state due to bending-engineered interatomic distances and magnetic exchange coupling coefficients. Besides, band gap of monolayer CrI3can be also effectively tailored under bending, which clearly decreases with the bending curvature. These results can serve as theoretical references for flexible electronic and magnetic devices in two-dimensional magnetic materials.
Liu et al. (Wed,) studied this question.