We report on the high-pressure synthesis of a CrS2 phase in the form of single-crystalline nanorods. A structural refinement of Precession Electron Diffraction Tomography data confirms the nominal CrS2 composition and unveils a ladder-type structure formed by portions of 1T-type CrS2 layers characteristic of two-dimensional (2D) dichalcogenides connected by chains of edge-sharing CrS6 octahedra characteristic of 3D dichalcogenides with marcasite structure. Ab initio density functional theory calculations of the relaxed structure confirm the stability of this structure and indicate a strong overlap of the 3d states of Cr with the 3p states of S, thus suggesting strong covalent Cr-S bonds and metallic behavior. Electrical resistivity, ϱ, measurements on single nanorods confirm this behavior and yield ϱ∼2−20 mΩ cm at 4 K. The proposed ladder-like structure of CrS2 forms open channels along the chain direction, which may be suitable for ionic conduction.
@article{arxiv.2604.08695,
title = {A metallic CrS$_2$ phase bridging the gap between two- and three-dimensional dichalcogenides},
author = {Hicham Moutaabbid and Dario Taverna and Denis Pelloquin and Lorenzo Paulatto and Alexandre Gloter and Sophie Guéron and Alik Kasumov and Andrea Gauzzi},
journal= {arXiv preprint arXiv:2604.08695},
year = {2026}
}