Abstract
This article shows that in a van der Waals multiferroic heterostructure, the electric field controls the electric polarization and influences the interfacial Dzyaloshinskii-Moriya interaction, resulting in the creation and annihilation of skyrmions.
Highlights
In recent years, magnetic skyrmions have attracted much attention due to the spin textures and potential applications in the next-generation information storage and processing devices
Since a rather large effective magnetic field could be realized by the skyrmion lattice and this skyrmion lattice can be tuned from our study here, it is feasible that, once the conduction electron density is commensurate with the magnetic flux of the skyrmion lattice, quantum anomalous Hall effect (QAHE) could emerge
The inversion symmetry breaking of the interface leads to nonvanishing Dzyaloshinskii-Moriya interaction (DMI) between neighboring Cr local moments
Summary
Magnetic skyrmions have attracted much attention due to the spin textures and potential applications in the next-generation information storage and processing devices. It was experimentally demonstrated that skyrmions can be created and destroyed by the tunneling current [14] or the electric field [15] of a scanning tunneling microscope (STM) tip, with the latter still involving a tunneling current. Another promising way is to control the skyrmions in the multiferroic insulators by electric fields via the electromagnetic coupling [16,17,18,19].
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