Topological meron-antimeron domain walls and skyrmions in a low-symmetry system
arXiv:2411.04009 · doi:10.1103/PhysRevX.15.021041
Abstract
The generation of topologically non-trivial magnetic configurations has been a pivotal topic in both basic and applied nanomagnetism research. Localized non-coplanar magnetic defects such as skyrmions or merons were found to interact strongly with currents, making them interesting candidates for future spintronics applications. Here, we study a low-symmetry bcc(110) system by spin-polarized scanning tunneling microscopy and an atomistic spin model using parameters obtained from first-principles calculations. We demonstrate how a delicate balance between energy terms generates both topologically trivial and non-trivial domain walls, depending on their crystallographic direction. The topological walls consist of merons and antimerons and the topological charge amounts to about 0.2/nm wall length. The incorporation of holes in the films facilitates the transition from an in-plane ferromagnetic ground state to a spin-spiral state. Both domain walls and spirals transition into isolated elongated magnetic skyrmions in applied magnetic fields, establishing low-symmetry systems as a versatile platform for spin-texture engineering.
References in corpus (16)
- Additive interfacial chiral interaction in multilayers for stabilization of small individual skyrmion at room temperature
- Magnetic skyrmion logic gates: conversion, duplication and merging of skyrmions
- Beyond skyrmions: Review and perspectives of alternative magnetic quasiparticles
- Skyrmion fractionalization and merons in chiral magnets with easy-plane anisotropy
- Antiferromagnetic Half-skyrmions and Bimerons at room temperature
- Néel-type skyrmion lattice in tetragonal polar magnet VOSeO
- Room-temperature antiskyrmions and sawtooth surface textures in a noncentrosymmetric magnet with symmetry
- Two-dimensional Shiba lattices as possible platform for crystalline topological superconductivity
- Magnetic structure of monatomic Fe chains on Re(0001): emergence of chiral multi-spin interactions
- Dynamics of an elliptical ferromagnetic skyrmion driven by the spin-orbit torque
- Temperature scaling of the Dzyaloshinsky-Moriya interaction in the spin wave spectrum
- Homochiral antiferromagnetic merons, antimerons and bimerons realized in synthetic antiferromagnets
- Antiferromagnetism-driven two-dimensional topological nodal-point superconductivity
- Magnetic phase diagram of an Fe monolayer on W(110) and Ta(110) surfaces based on ab initio calculations
- On the scaling behaviour of cross-tie domain wall structures in patterned NiFe elements
- Magnetic Bimeron Traveling on the Domain Wall