Insights into the orbital magnetism of noncollinear magnetic systems
arXiv:1707.04518 · doi:10.1117/12.2275305
Abstract
The orbital magnetic moment is usually associated with the relativistic spin-orbit interaction, but recently it has been shown that noncollinear magnetic structures can also be its driving force. This is important not only for magnetic skyrmions, but also for other noncollinear structures, either bulk-like or at the nanoscale, with consequences regarding their experimental detection. In this work we present a minimal model that contains the effects of both the relativistic spin-orbit interaction and of magnetic noncollinearity on the orbital magnetism. A hierarchy of models is discussed in a step-by-step fashion, highlighting the role of time-reversal symmetry breaking for translational and spin and orbital angular motions. Couplings of spin-orbit and orbit-orbit type are identified as arising from the magnetic noncollinearity. We recover the atomic contribution to the orbital magnetic moment, and a nonlocal one due to the presence of circulating bound currents, exploring different balances between the kinetic energy, the spin exchange interaction, and the relativistic spin-orbit interaction. The connection to the scalar spin chirality is examined. The orbital magnetism driven by magnetic noncollinearity is mostly unexplored, and the presented model contributes to laying its groundwork.
References in corpus (35)
- Berry Phase Effects on Electronic Properties
- Skyrmion Lattice in a Chiral Magnet
- New Perspectives for Rashba Spin-Orbit Coupling
- Observation of room temperature magnetic skyrmions and their current-driven dynamics in ultrathin Co films
- Topological Hall effect in the A-phase of MnSi
- Magnetometry with nitrogen-vacancy defects in diamond
- Spin Transfer Torques in MnSi at Ultra-low Current Densities
- Skyrmions at room temperature : From magnetic thin films to magnetic multilayers
- Additive interfacial chiral interaction in multilayers for stabilization of small individual skyrmion at room temperature
- Room temperature chiral magnetic skyrmion in ultrathin magnetic nanostructures
- Emergent electrodynamics of skyrmions in a chiral magnet
- Field-Dependent Size and Shape of Single Magnetic Skyrmions
- Orbital ferromagnetism and anomalous Hall effect in antiferromagnets on distorted fcc lattice
- Electrically tunable quantum anomalous Hall effect in 5d transition-metal adatoms on graphene
- Skyrmions with varying size and helicity in composition-spread helimagnetic alloys
- Chirality driven anomalous Hall effect in weak coupling regime
- Electrical detection of magnetic skyrmions by non-collinear magnetoresistance
- Electronic Orbital Currents and Polarization in Mott Insulators
- Quantized Anomalous Hall Effects in Skyrmion Crystal
- Dichroic f-sum rule and the orbital magnetization of crystals
- Real-Space Berry Phases - Skyrmion Soccer
- Equilibrium spin currents: Non-Abelian gauge invariance and color diamagnetism in condensed matter
- Real-Space and Reciprocal-Space Berry Phases in the Hall Effect of MnFeSi
- Theory of Orbital Magnetization in Solids
- Perpendicular Reading of Single Confined Magnetic Skyrmions
- Role of Berry phase theory for describing orbital magnetism: From magnetic heterostructures to topological orbital ferromagnets
- Unconventional Topological Hall Effect in Skyrmion Crystals Caused by the Topology of the Lattice
- Topological Spin Hall Effect due to Magnetic Skyrmions
- Chirality-driven orbital magnetic moments as a new probe for topological magnetic structures
- Permanent current from non-commutative spin algebra
- Classical Yang-Mills theory in condensed matter physics
- Quantum toys for quantum computing: persistent currents controled by spin chirality
- Breakdown of the Peierls substitution for the Haldane model with ultracold atoms
- Spin superfluidity and spin-orbit gauge symmetry fixing
- Three-atom magnets with strong substrate coupling: a gateway towards non-collinear spin processing
Cited by in corpus (4)
- Magnetoelectric effect and orbital magnetization in skyrmion crystals: Detection and characterization of skyrmions
- Multiple-scattering approach for multi-spin chiral magnetic interactions: Application to the one- and two-dimensional Rashba electron gas
- Impurity-induced orbital magnetization in a Rashba electron gas
- Generalization of the Landau-Lifshitz-Gilbert equation by multi-body contributions to Gilbert damping for non-collinear magnets