Back to Search
Start Over
Spontaneous skyrmionic lattice from anisotropic symmetric exchange in a Ni-halide monolayer
- Publication Year :
- 2020
-
Abstract
- Topological spin structures, such as magnetic skyrmions, hold great promises for data storage applications, thanks to their inherent stability. In most cases, skyrmions are stabilized by magnetic fields in non-centrosymmetric systems displaying the chiral Dzyaloshinskii-Moriya exchange interaction, while spontaneous skyrmion lattices have been reported in centrosymmetric itinerant magnets with long-range interactions. Here, a spontaneous anti-biskyrmion lattice with unique topology and chirality is predicted in the monolayer of a semiconducting and centrosymmetric metal halide, NiI$_2$. Our first-principles and Monte Carlo simulations reveal that the anisotropies of the short-range symmetric exchange, when combined with magnetic frustration, can lead to an emergent chiral interaction that is responsible for the predicted topological spin structures. The proposed mechanism finds a prototypical manifestation in two-dimensional magnets, thus broadening the class of materials that can host spontaneous skyrmionic states.<br />Comment: submitted
Details
- Database :
- arXiv
- Publication Type :
- Report
- Accession number :
- edsarx.2005.02714
- Document Type :
- Working Paper
- Full Text :
- https://doi.org/10.1038/s41467-020-19535-w