Abstract
is the first material in which antiskyrmions have been observed in ultrathin single-crystalline specimens. While bulk crystals exhibit fractal patterns of purely ferromagnetic domain ordering at room temperature, ultrathin lamellae clearly show antiskyrmion lattices with lattice spacings up to several . In the paper presented here, we systematically investigate the thickness region from 400 nm to 10 using wide plates, and identify the critical thickness-to-width aspect ratio for the ferromagnetic fractal domain to the noncollinear texture phase transition. Additionally, we also explore these noncollinear magnetic textures below the critical aspect ratio above and below the spin-reorientation transition temperature while applying variable external magnetic fields. What we find is a strong hysteresis for the occurrence of an antiskyrmion lattice, since the antiskyrmions preferentially nucleate by pinching them off from helical stripes in the transition to the field polarized state.
- Received 20 November 2020
- Revised 26 March 2021
- Accepted 27 April 2021
DOI:https://doi.org/10.1103/PhysRevB.103.184411
Published by the American Physical Society under the terms of the Creative Commons Attribution 4.0 International license. Further distribution of this work must maintain attribution to the author(s) and the published article's title, journal citation, and DOI. Open access publication funded by the Max Planck Society.
Published by the American Physical Society