Mixed topology ring states for Hall effect and orbital magnetism in skyrmions of Weyl semimetals
arXiv:2003.03243 · doi:10.1103/PhysRevB.102.184407
Abstract
Skyrmion lattices as a novel type of chiral spin states are attracting increasing attention, owing to their peculiar properties stemming from real-space topological properties. At the same time, the properties of magnetic Weyl semimetals with complex -space topology are moving into the focus of research in spintronics. We consider the Hall transport properties and orbital magnetism of skyrmion lattices imprinted in topological semimetals, by employing a minimal model of a 2D mixed Weyl semimetal which, as a function of the magnetization direction, exhibits two Chern insulator phases separated by a Weyl state for an an in-plane magnetization direction. We find that while the orbital magnetization is topologically robust and Hall transport properties are very sensitive to the details of the spin distribution in accordance to the behavior expected from the recently discovered chiral Hall effect[1], their behavior in the region of the Chern insulator gap is largely determined by the properties of the so-called mixed topology ring states, emerging in domain walls that separate the skyrmion core from the ferromagnetic background. In particular, we show that these localized ring states possess a given orbital chirality which reverses sign as a function of the skyrmion radius, thereby mediating a smooth switching dynamics of the orbital magnetization of the skyrmion lattice. We speculate that while the emergent ring states can possibly play a role in the physics of Majorana states, probing their properties experimentally can provide insights into the details of skyrmionic spin structures.
References in corpus (47)
- Experimental Observation of the Quantum Anomalous Hall Effect in a Magnetic Topological Insulator
- Magnetic-field-induced quantized anomalous Hall effect in intrinsic magnetic topological insulator MnBiTe
- Prediction and observation of the first antiferromagnetic topological insulator
- First Principles Calculation of Anomalous Hall Conductivity in Ferromagnetic bcc Fe
- Magnetic Weyl Semimetal Phase in a Kagome Crystal
- Magnetic skyrmion logic gates: conversion, duplication and merging of skyrmions
- Skyrmion Lattice in a Doped Semiconductor
- Quantum Anomalous Hall Effect in Graphene from Rashba and Exchange Effects
- Berry phase correction to electron density of states in solids
- Topological Hall effect and Berry phase in magnetic nanostructures
- Field-Dependent Size and Shape of Single Magnetic Skyrmions
- Skyrmion-skyrmion and skyrmion-edge repulsions in skyrmion-based racetrack memory
- Orbital magnetization in periodic insulators
- Skyrmion-electronics: Writing, deleting, reading and processing magnetic skyrmions toward spintronic applications
- Observation of magnetic excitations of skyrmion crystal in a helimagnetic insulator
- Thermal skyrmion diffusion applied in probabilistic computing
- Dynamics of an Insulating Skyrmion under a Temperature Gradient
- Quantized Anomalous Hall Effects in Skyrmion Crystal
- Atomic-Scale Interface Engineering of Majorana Edge Modes in a 2D Magnet-Superconductor Hybrid System
- Antiferromagnetic skyrmion crystals: generation, topological Hall and topological spin Hall effect
- Potential implementation of Reservoir Computing models based on magnetic skyrmions
- Majorana bound states in magnetic skyrmions
- Low density ferromagnetism in biased bilayer graphene
- Theory of Orbital Magnetization in Solids
- Pseudo-electromagnetic fields in topological semimetals
- Role of Berry phase theory for describing orbital magnetism: From magnetic heterostructures to topological orbital ferromagnets
- Majorana bound states in magnetic skyrmions imposed onto a superconductor
- Mixed topological semimetals driven by orbital complexity in two-dimensional ferromagnets
- Magnetic textures and dynamics in magnetic Weyl semimetals
- Skyrmion Dynamics in Multiferroic Insulator
- The chiral Hall effect of magnetic skyrmions from a cyclic cohomology approach
- Chirality-driven orbital magnetic moments as a new probe for topological magnetic structures
- Mixed Weyl semimetals and dissipationless magnetization control in insulators by spin-orbit torques
- Prototypical topological orbital ferromagnet -FeMn
- Skyrmion-induced bound states in a superconductor
- Stabilization and control of Majorana bound states with elongated skyrmions
- Theory for spin torque in Weyl semimetal with magnetic texture
- Magnetoelectric effect and orbital magnetization in skyrmion crystals: Detection and characterization of skyrmions
- Engineering Chiral and Topological Orbital Magnetism of Domain Walls and Skyrmions
- Quantum Anomalous Hall effect in graphene coupled to skyrmions
- Distinct magnetotransport and orbital fingerprints of chiral bobbers
- The family of topological Hall effects for electrons in skyrmion crystals
- Theory of current-driven dynamics of spin textures on a surface of topological insulators
- Magnonic Weyl states in Cu2OSeO3
- Charge pumping induced by magnetic texture dynamics in Weyl semimetals
- Rashba-induced spin electromagnetic fields in a strong sd coupling regime
- Engineering the dynamics of topological spin textures by anisotropic spin-orbit torques