Detection of antiskyrmions by topological Hall effect in Heusler compounds

Abstract

Heusler compounds having $\text{D}$${}_{2d}$ crystal symmetry gained much attention recently due to the stabilization of a vortex-like spin texture called antiskyrmions in thin lamellae of Mn${}_{1.4}$Pt${}_{0.9}$Pd${}_{0.1}$Sn as reported in the work of Nayak $\text{et al.}$ [Nature (London) 548, 561 (2017)]. Here we show that bulk Mn${}_{1.4}$Pt${}_{0.9}$Pd${}_{0.1}$Sn undergoes a spin-reorientation transition from a collinear ferromagnetic to a noncollinear configuration of Mn moments below 135 K, which is accompanied by the emergence of a topological Hall effect. We tune the topological Hall effect in Pd and Rh substituted Mn${}_{1.4}$PtSn Heusler compounds by changing the intrinsic magnetic properties and spin textures. A unique feature of the present system is the observation of a zero-field topological Hall resistivity with a sign change which indicates the robust formation of antiskyrmions.

References in corpus (10)

• Spontaneous Skyrmion Ground States in Magnetic Metals
• A new class of chiral materials hosting magnetic skyrmions beyond room temperature
• Robust formation of skyrmions and topological Hall effect in epitaxial thin films of MnSi
• Guidelines for understanding cubic manganese-rich Heusler compounds
• Large Noncollinearity and Spin Reorientation in the Novel Mn2RhSn Heusler Magnet
• Stabilization and current-induced motion of antiskyrmion in the presence of anisotropic Dzyaloshinskii-Moriya interaction
• Real-Space and Reciprocal-Space Berry Phases in the Hall Effect of Mn${}_{1-\mathrm{x}}$Fe${}_{\mathrm{x}}$Si
• Discretized Topological Hall Effect Emerging from Skyrmions in Constricted Geometry
• Controllable chirality-induced geometrical Hall effect in a frustrated highly-correlated metal
• Anisotropic Topological Hall Effect with Real and Momentum Space Berry Curvature in the Antiskrymion Hosting Heusler Compound Mn${}_{1.4}$PtSn

Cited by in corpus (6)

• Robust topological Hall effect driven by tunable noncoplanar magnetic state in Mn-Pt-In inverse tetragonal Heusler alloys
• Large topological Hall effect in an easy-cone ferromagnet (Cr0.9B0.1)Te
• Creating arbitrary sequences of mobile magnetic skyrmions and antiskyrmions
• Planar topological Hall effect in a hexagonal ferromagnetic Fe5Sn3 single crystal
• Elliptical skyrmions: theory and nucleation by a magnetic tip in an antiskyrmion-hosting material
• Bounds and anomalies of inhomogeneous anomalous Hall effects