2017/03/31 by Vegard Flovik, Alireza Qaiumzadeh, Ashis Nandy +4 · 1 citation
Engineering · Mathematics · Physics and Astronomy · #Amplitude #Condensed matter physics #Ferromagnetism #Field (mathematics) #Laser #Magnetic field #Magnetic properties of thin films #Materials science #Mathematics #Metallic Glasses and Amorphous Alloys #Nucleation #Optics #Phase (matter) #Phase diagram #Physics #Picosecond #Pulse (music) #Quantum mechanics #Skyrmion #Theoretical and Computational Physics #Ultrashort pulse #cond-mat.mes-hall #cond-mat.mtrl-sci
paper · pdf · doi:10.1103/physrevb.96.140411
published as Phys. Rev. B 96, 140411(R) (2017) · 4.5 pages+Supplemental Material
arxiv created 2017/10/25 · openalex publication_date 2017/10/25 · arxiv updated 2017/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
We numerically demonstrate an ultrafast method to create single skyrmions in a collinear ferromagnetic sample by applying a picosecond (effective) magnetic field pulse in the presence of Dzyaloshinskii-Moriya interaction. For small samples the applied magnetic field pulse could be either spatially uniform or nonuniform while for large samples a nonuniform and localized field is more effective. We examine the phase diagram of pulse width and amplitude for the nucleation. Our finding could ultimately be used to design future skyrmion-based devices.