Detailed transport studies on a triangular-lattice layered van der Waals magnet Cr_1/4NbSe₂: from bulk to a few layers

Intercalating 3d transition-metal ions into a van der Waals gap of transition-metal dichalcogenides (TMDCs) causes various types of long-range magnetic orders. These orders are developed with different types of magnetic interactions including RKKY and DM interaction, and the magnetic properties of those compounds are largely varied depending on the combination of the host TMDCs, the type and amount of intercalant element, and the pattern of the in-plane superstructures. We have focused on a triangular-lattice layered van der Waals magnet Cr_1/4NbSe₂, and explored its magnetic properties by vacuum annealing and ion gating experiments [1]. In this presentation, we will focus on the detailed transport properties of pristine Cr_1/4NbSe₂ and their layer-number dependencies, from bulk to a few layer limit, and discuss the origin of the two characteristic temperatures that we observed as anomalies in their resistance versus temperature curves.



[1] X. Huang et al. K23.00005, APS March Meeting 2024.