| Title: |
Imprinting of Antiferromagnetic Vortex States in NiO-Fe Nanostructures |
| Authors: |
Ślęzak, M., Wagner, T., Bharadwaj, V. K., Gomonay, O., Kozioł-Rachwał, A., Menteş, T. O., Locatelli, A., Zając, M., Wilgocka-Ślęzak, D., Dróżdż, P., Ślęzak, T. |
| Publication Year: |
2024 |
| Collection: |
Condensed Matter |
| Subject Terms: |
Condensed Matter - Mesoscale and Nanoscale Physics, Condensed Matter - Materials Science |
| More Details: |
Magnetic vortices are topological spin structures frequently found in ferromagnets, yet novel to antiferromagnets. By combining experiment and theory, we demonstrate that in a nanostructured antiferromagnetic-ferromagnetic NiO(111)-Fe(110) bilayer, a magnetic vortex is naturally stabilized by magnetostatic interactions in the ferromagnet and is imprinted onto the adjacent antiferromagnet via interface exchange coupling. We use micromagnetic simulations to construct a corresponding phase diagram of the stability of the imprinted antiferromagnetic vortex state. Our in depth analysis reveals that the interplay between interface exchange coupling and the antiferromagnet magnetic anisotropy plays a crucial role in locally reorienting the N\'eel vector out-of-plane in the prototypical in-plane antiferromagnet NiO and thereby stabilizing the vortices in the antiferromagnet. |
| Document Type: |
Working Paper |
| Access URL: |
http://arxiv.org/abs/2403.05151 |
| Accession Number: |
edsarx.2403.05151 |
| Database: |
arXiv |
