Ferromagnetic Interlayer Coupling in CrSBr Crystals Irradiated by Ions.
Fangchao LongMahdi Ghorbani-AslKseniia MosinaYi LiKaiman LinFabian GanssRené HübnerZdeněk SoferFlorian DirnbergerAkashdeep KamraArkady V KrasheninnikovSlawomir PrucnalManfred HelmShengqiang ZhouPublished in: Nano letters (2023)
Layered magnetic materials are becoming a major platform for future spin-based applications. Particularly, the air-stable van der Waals compound CrSBr is attracting considerable interest due to its prominent magneto-transport and magneto-optical properties. In this work, we observe a transition from antiferromagnetic to ferromagnetic behavior in CrSBr crystals exposed to high-energy, non-magnetic ions. Already at moderate fluences, ion irradiation induces a remanent magnetization with hysteresis adapting to the easy-axis anisotropy of the pristine magnetic order up to a critical temperature of 110 K. Structure analysis of the irradiated crystals in conjunction with density functional theory calculations suggests that the displacement of constituent atoms due to collisions with ions and the formation of interstitials favors ferromagnetic order between the layers.
Keyphrases
- room temperature
- density functional theory
- molecularly imprinted
- molecular dynamics
- quantum dots
- ionic liquid
- aqueous solution
- water soluble
- solar cells
- high throughput
- high intensity
- molecular dynamics simulations
- highly efficient
- gold nanoparticles
- solid phase extraction
- radiation therapy
- mass spectrometry
- radiation induced
- reduced graphene oxide