Giant topological and planar Hall effect in Cr$_{1/3}$NbS$_{2}$

TL;DR

This paper reports a giant topological and planar Hall effect in Cr$_{1/3}$NbS$_{2}$, revealing complex non-coplanar spin textures and a tilted soliton lattice through detailed angular measurements.

Contribution

It demonstrates the existence of a giant topological and planar Hall effect in Cr$_{1/3}$NbS$_{2}$ and links these effects to complex spin structures and a tilted soliton lattice.

Findings

Giant planar Hall effect linked to tilted soliton lattice

Presence of a topological Hall component indicating non-coplanar spins

Intrinsic connection between planar Hall effect and anisotropic magnetoresistance

Abstract

Cr$_{1/3}$NbS$_{2}$ is a transition metal dichalcogenide that has been of significant interest due to its ability to host a magnetic chiral soliton lattice. Conventional and planar Hall measurements provide valuable insight into the detection of exotic spin structures in chiral magnets. We show that the presence of a giant planar Hall effect can be attributed to a tilted soliton lattice in Cr$_{1/3}$NbS$_{2}$. Our detailed angular dependent study shows the planar Hall effect and anisotropic magnetoresistance are intrinsically linked in complex non-coplanar magnets. From the conventional Hall signal we show the presence of a giant unconventional, likely topological Hall component, that is the fingerprint of non-coplanar spin textures.