Spontaneous magnetic merons in a half-metallic Mn₂I₃Br₃ monolayer with easy-plane anisotropy

Abstract

Recent years, great efforts have been poured into sorting out two-dimensional (2D) Van der Waals ferromagnets that can stabilize peculiar chiral spin textures such as magnetic skyrmions and merons. Here,...

Topological phase transition and skyrmions in a Janus MnSbBiSe2Te2 monolayer

“…43 To better describe the Coulomb interaction on Mn atoms, the GGA + U method 44 is implemented with the effective Hubbard U set to 4.0 eV, which is consistent with recent studies. 31,45,46 We also noticed that Otrokov et al 47 have tested the effect of different U values (3, 4 and 5.34 eV) and found all of them led to the same qualitative results. The cut-off energy is set to 400 eV.…”

Intrinsic edge states and strain-tunable spin textures in the Janus 1T-VTeCl monolayer

“…4(b), bimerons consist of two merons with opposite polarities, which make them more stable than the isolated merons. 51 When an external magnetic field of 0.75 T is applied as shown in Fig. 4(c), the bimeron states disappear, giving way to the emergence of vortex and antivortex configurations, where the topological charge of the vortex differs by one minus sign from that of the vortex in box 2 of Fig.…”

A Janus CrSSe monolayer with interesting ferromagnetism

“…S2a (ESI †), due to the translational invariance, although there the some negligibly small imaginary modes near the G point, the absence of imaginary frequencies in the other q points throughout the Brillouin zone in the phonon dispersion curves satisfies the required dynamic stability. 10,67,72 After AIMD simulations at 300 K, the Janus CrSSe monolayer maintains its original structure without any reconstruction (Fig. S2b, ESI †).…”