Layer effects on the magnetic textures in magnets with local inversion asymmetry
arXiv:2005.12947 · doi:10.1103/PhysRevB.102.174403
Abstract
Magnets with broken local inversion symmetries are interesting candidates for chiral magnetic textures such as skyrmions and spin spirals. The property of these magnets is that each subsequent layer can possess a different Dzyaloshniskii-Moriya interaction (DMI) originating from the local inversion symmetry breaking. Given that new candidates of such systems are emerging, with the Van der Waals crystals and magnetic multilayer systems, it is interesting to investigate how the chiral magnetic textures depend on the number of layers and the coupling between them. In this article, we model the magnetic layers with a classical Heisenberg spin model, where the sign of the DMI alternates for each consecutive layer. We use Monte Carlo simulations to examine chiral magnetic textures and show that the pitch of magnetic spirals is influenced by the interlayer coupling and the number of layers. We observe even-odd effects in the number of layers, where we observe a suppression of the spin spirals for even layer numbers. We give an explanation for our findings by proposing a net DMI in systems with strongly coupled layers. Our results can be used to determine the DMI in systems with a known number of layers, and for new technologies based on the tunability of the spiral wave length.
arXiv comment8 pages, 8 figures and 2 tables
References in corpus (20)
- Electric Field Effect in Atomically Thin Carbon Films
- Van der Waals heterostructures
- Layer-dependent Ferromagnetism in a van der Waals Crystal down to the Monolayer Limit
- Skyrmion Lattice in a Chiral Magnet
- Magnetic 2D materials and heterostructures
- Observation of room temperature magnetic skyrmions and their current-driven dynamics in ultrathin Co films
- Additive interfacial chiral interaction in multilayers for stabilization of small individual skyrmion at room temperature
- Skyrmions at room temperature : From magnetic thin films to magnetic multilayers
- Dynamics of Dzyaloshinskii domain walls in ultrathin magnetic films
- Tunable Room Temperature Magnetic Skyrmions in Ir/Fe/Co/Pt Multilayers
- Switching 2D Magnetic States via Pressure Tuning of Layer Stacking
- Hidden spin polarization in inversion-symmetric bulk crystals
- Pressure-controlled interlayer magnetism in atomically thin CrI3
- Chiral skyrmions in thin magnetic films: new objects for magnetic storage technologies?
- Direct observation of spin-polarised bulk bands in an inversion-symmetric semiconductor
- Generation and evolution of spin-, valley- and layer-polarized excited carriers in inversion-symmetric WSe2
- Current Control of Magnetism in Two-Dimensional Fe3GeTe2
- Selective probing of hidden spin-polarized states in inversion-symmetric bulk MoS2
- Spin accumulation and dynamics in inversion-symmetric van der Waals crystals
- Stabilizing chiral spin-structures via an alternating Dzyaloshinskii-Moriya interaction