Open AccessAsymmetry in the propagation of vortex domain wall artificial skyrmion composite system
Author(s) -
David Eilmsteiner,
Xi-guang Wang,
L. Chotorlishvili,
Sebastian Paischer,
Martin Hoffmann,
P. Buczek,
A. Ernst
Publication year - 2021
Publication title -
journal of physics. condensed matter
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.908
H-Index - 228
eISSN - 1361-648X
pISSN - 0953-8984
DOI - 10.1088/1361-648x/abee39
Subject(s) - asymmetry , skyrmion , vortex , distortion (music) , micromagnetics , domain (mathematical analysis) , physics , domain wall (magnetism) , dynamics (music) , mechanics , classical mechanics , condensed matter physics , mathematical analysis , mathematics , quantum mechanics , magnetic field , magnetization , acoustics , amplifier , optoelectronics , cmos
We studied the propagation of an artificial skyrmion coupled to the vortex domain wall (VDW). We discovered the following effect: depending on the propagation’s direction, the dynamics of the coupled skyrmion VDW can be faster than the isolated VDW’s velocity. The reason for such behavior is the structural distortion that occurs in the coupled system. We interpret the numerical results in terms of the modified Thiele’s equation. In particular, increasing the Thiele’s equation counteractive coefficient leads to the perfect fitting with the micromagnetic simulation results.