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Article Dans Une Revue Physical Review B Année : 2021

Mechanism for ultrafast electric-field driven skyrmion nucleation

L. Desplat
S. Meyer
J. Bouaziz
P M Buhl
  • Fonction : Auteur
S. Lounis
B. Dupé
P.-A. Hervieux
  • Fonction : Auteur

Résumé

We show how a Dzyaloshinskii-Moriya interaction can be generated in an ultrathin metal film from a femtosecond pulse in electric field. 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 and MnPt 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 hundred-femtosecond timescale.
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Dates et versions

hal-04444273 , version 1 (07-02-2024)

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L. Desplat, S. Meyer, J. Bouaziz, P M Buhl, S. Lounis, et al.. Mechanism for ultrafast electric-field driven skyrmion nucleation. Physical Review B, 2021, 104 (6), pp.L060409. ⟨10.1103/PhysRevB.104.L060409⟩. ⟨hal-04444273⟩

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