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From bubble to Skyrmion: Dynamic transformation mediated by a strong magnetic tip |
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| Authors: | A.S. Kirakosyan V.L. Pokrovsky |
| Affiliation: | 1. Department of Physics, Jackson State University, 1400 Lynch St., MS 39217, USA;2. Department of Physics, Yerevan State University, 1 Alex Manoogian St., Yerevan, 375025, Armenia;3. Department of Physics, Texas A&M University, College Station, Texas 77843-4242, USA;4. Landau Institute of Theoretical Physics, Moscow, Russia |
| Abstract: | Skyrmions in thin metallic ferromagnetic films are stable due to competition between the RKKY interaction and uniaxial magnetic anisotropy. We study static nonlinear excitations in magnetic film in the presence of strong cylindrical magnetic tip of nanometer size. We mimic the RKKY interaction by the next-nearest-neighbors ferromagnetic and antiferromagnetic exchange interactions. We demonstrate analytically and numerically dissipative transformation of a bubble created by a strong magnetic tip into a stable Skyrmion. |
| Keywords: | 75.50.Ss 75.70.Ak 75.70.Kw 75.40.Gb |
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