Topological Hall signatures of magnetic hopfions
Börge Göbel, Collins Ashu Akosa, Gen Tatara, Ingrid Mertig
Abstract
The authors calculate the topological Hall conductivity of electrons in a magnetic hopfion. This nano-object is a noncollinear spin texture that gives rise to a locally uncompensated emergent magnetic field. Due to this field, a hopfion exhibits a distinct topological Hall signature that can be useful for spintronic applications. One simulated example is a mechanism for detecting hopfions in racetrack data storage devices.
Topics & Concepts
SpintronicsPhysicsCondensed matter physicsTexture (cosmology)Signature (topology)Hall effectSpin (aerodynamics)Hall conductivityTopology (electrical circuits)Topological insulatorElectronFerromagnetismMagnetic fieldMagnetizationQuantum spin Hall effectMagnetic storageTheoretical physicsCurrent (fluid)Topological Materials and PhenomenaMagnetic properties of thin filmsChemical and Physical Properties of Materials