Mechanism for ultrafast electric-field driven skyrmion nucleation
نویسندگان
چکیده
We show how a Dzyaloshinskii-Moriya interaction can be generated in an ultrathin metal film from the induced internal electric field created by ultrashort electromagnetic pulse. This does not require structural inversion-symmetry breaking, and its amplitude tuned depending on of field. perform first-principles calculations to estimate strength field-induced magnetoelectric coupling for ferromagnetic Fe, Co, Ni, antiferromagnetic Mn, as well FePt alloys. Last, using atomistic simulations, we demonstrate isolated skyrmion coherently nucleated collinear background pulse 100-fs timescale.
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ژورنال
عنوان ژورنال: Physical Review B
سال: 2021
ISSN: ['1098-0121', '1550-235X', '1538-4489']
DOI: https://doi.org/10.1103/physrevb.104.l060409