Dzyaloshinskii-Moriya interaction induced by an ultrashort electromagnetic pulse: Application to coherent (anti)ferromagnetic skyrmion nucleation

Abstract

We show how a Dzyaloshinskii-Moriya interaction can be generated in an ultrathin metal film from the induced internal electric field created by an ultrashort electromagnetic pulse. This interaction does not require structural inversion-symmetry breaking, and its amplitude can be tuned depending on the amplitude of the field. We perform first-principles calculations to estimate the strength of the field-induced magnetoelectric coupling for ferromagnetic Fe, Co, and Ni, and antiferromagnetic Mn, as well as FePt alloys. Last, using atomistic simulations, we demonstrate how an isolated antiferromagnetic skyrmion can be coherently nucleated from the collinear background by an ultrashort pulse in electric field on a 100-fs timescale.

5 pages, 4 figures

References in corpus (5)

• Super-Diffusive Spin-Transport as a Mechanism of Ultrafast Demagnetization
• Surface Magnetoelectric Effect in Ferromagnetic Metal Films
• Skyrmions in antiferromagnets: thermal stability and the effect of external field and impurities
• Lagrangian approach to the semi-relativistic electron dynamics in the mean-field approximation
• Chiral magnetism of magnetic adatoms generated by Rashba electrons

Cited by in corpus (5)

• Electrical control of magnetism by electric field and current-induced torques
• Band filling effects on the emergence of magnetic skyrmions: Pd/Fe and Pd/Co bilayers on Ir(111)
• Spin-current driven Dzyaloshinskii-Moriya interaction in the multiferroic BiFeO3 from first-principles
• Magnetoelectricity of Topological Solitons in 2D Magnets
• Skyrmionic Schrödinger cat states in monoaxial chiral magnets