Chiral Helimagnetism and the Hall effect in Cr_1/3NbS₂.

Noncentrosymmetric magnetic systems have been found to host a variety of exotic, and in some cases topologically protected, magnetic states such as skyrmion lattices, bimerons, chiral solitons and helimagnetism to list a few. Materials that have faced increased scrutiny in recent years for their magnetism are two-dimensional (2D) materials. Of these, the intercalated transition metal dichalcogenides (TMDCs) are an interesting class exhibiting ferromagnetic or antiferromagnetic ordering and some of them are also known to host chiral soliton lattices. Cr_1/3NbS₂ is an example of a 2D TMDC where the structure consists predominately of layers of Nb and S where the Cr atoms have been intercalated between the layers. Cr_1/3NbS₂ is known to exhibit chiral helimagnetic ordering as well as a chiral soliton lattice [1]. Conventional and planar Hall measurements can provide valuable insight into the presence of exotic spin structures in chiral magnets. We present our recent results of an extensive study of the Hall effect in single crystal Cr_1/3NbS₂ [2].

[1] Y. Togawa et al. Phys. Rev. Lett. 108, 107202 (2012).

[2] D. A. Mayoh et al., Submitted (2021).