Robust formation of topological Hall effect in MnGa/heavy metal bilayers

Abstract

We have investigated the topological Hall effect (THE) in MnGa/Pt and MnGa/Ta bilayers induced by interfacial Dzyaloshinskii-Moriya interaction (DMI). The most evident THE signals have been found based on the MnGa films with small critical DMI energy constant Dc. The large topological portion of the Hall signal from the total Hall signal has been extracted in the whole temperature range from 5 to 300 K. These results open up the exploration of the DMI induced magnetic behavior based on the bulk perpendicular magnetic anisotropy materials for fundamental physics and magnetic storage technologies.

References in corpus (8)

• Additive interfacial chiral interaction in multilayers for stabilization of small individual skyrmion at room temperature
• Interface-Induced Phenomena in Magnetism
• Tunable Room Temperature Magnetic Skyrmions in Ir/Fe/Co/Pt Multilayers
• Interface-driven topological Hall effect in SrRuO${}_3$-SrIrO${}_3$ bilayer
• Robust formation of skyrmions and topological Hall effect in epitaxial thin films of MnSi
• Hund's rule-driven Dzyaloshinskii-Moriya interaction at 3d-5d interfaces
• Anomalous Hall effect and spin orbit torques in MnGa/IrMn films: Modification from strong spin Hall effect of antiferromagnet
• Observation of orbital two-channel Kondo effect in a ferromagnetic L10-MnGa film

Cited by in corpus (7)

• Interpretation of experimental evidence of the topological Hall effect
• Distinguishing two-component anomalous Hall effect from topological Hall effect
• Interface-driven unusual anomalous Hall effect in MnxGa/Pt bilayers: No correlation with chiral spin structures
• Zero-field topological Hall effect in BiSb/MnGa bi-layers as a signature of ground-state skyrmions at room temperature
• Rhombic Fermi surfaces in a ferromagnetic MnGa thin film with perpendicular magnetic anisotropy
• Influence of chemical stability on the fabrication of MnGa-based devices
• Giant Topological Hall Effect Across Wide Temperature in Pt/NiCo2O4 Heterostructure