  Multi-functional manipulation of magnetic topological textures such as
skyrmions and bimerons in energy-efficient ways is of great importance for
spintronic applications, but still being a big challenge. Here, by
first-principles calculations and atomistic simulations, the creation and
annihilation of skyrmions/bimerons, as key operations for the reading and
writing of information in spintronic devices, are achieved in van der Waals
magnetoelectric CrISe/In2Se3 heterostructure via perpendicular strain or
electric field without external magnetic field. Besides, the bimeron-skyrmion
conversion, size modulation and the reversible magnetization switching from
in-plane to out-of-plane could also be realized in magnetic-field-free ways.
Moreover, the topological charge and morphology can be precisely controlled by
a small magnetic field. The strong Dzyaloshinskii-Moriya interaction and
tunable magnetic anisotropy energy in a wide window are found to play vital
roles in such energy efficient multi-functional manipulation, and the
underlying physical mechanisms are elucidated. Our work predicts the
CrISe/In2Se3 heterostructure being an ideal platform to address this challenge
in spintronic applications, and theoretically guides the low-dissipation
multi-functional manipulation of magnetic topological textures.
