摘要
In a spin-driven multiferroic system,the magnetoelectric coupling has the form of effective dynamical Dzyaloshinskii–Moriya(DM)interaction.Experimentally,it is confirmed,for instance,for Cu_(2)OSeO_(3),that the DM interaction has an essential role in the formation of skyrmions,which are topologically protected magnetic structures.Those skyrmions are very robust and can be manipulated through an electric field.The external electric field couples to the spin-driven ferroelectric polarization and the skyrmionic magnetic texture emerged due to the DM interaction.In this work,we demonstrate the effect of optical tweezing.For a particular configuration of the external electric fields it is possible to trap or release the skyrmions in a highly controlled manner.The functionality of the proposed tweezer is visualized by micromagnetic simulations and model analysis.
基金
This work was supported by the National Science Center in Poland as a research Project No.DEC-2017/27/B/ST3/02881
by the DFG through the SFB 762 and SFB-TRR227
by the National Natural Science Foundation of China No.11704415,024410-7
the Natural Science Foundation of Hunan Province of China No.2018JJ3629
A.E.acknowledges financial support from DFG through priority program SPP1666(Topological Insulators)
SFB-TRR227,and OeAD Grants Nos.HR 07/2018 and PL 03/2018
This work was supported by Shota Rustaveli National Science Foundation of Georgia(SRNSFG)[Grant No.FR-19-4049]
Open access funding provided by Projekt DEAL.
