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Transition metal dichalcogenides (TMDs) are a layered class of materials known for their rich physical properties, including charge density waves (CDWs) and superconductivity. Their layered crystal structure allows for the intercalation of first-row transition metals into the van der Waals gaps, which significantly modifies the physical properties of the host material, suppressing CDW and superconducting ground states while inducing magnetic order and enabling potential applications in spintronics and novel electronics [1].
In this study, we synthesized high-quality single crystals of NixNbS2 across a broad intercalation range (0.01 < x < 0.6), as well as stoichiometric Co1/3TaS2. Both systems exhibit antiferromagnetic ordering; however, a measurable ferromagnetic component was also observed in each, indicating the presence of Dzyaloshinskii–Moriya interactions.
We investigated the influence of intercalation on the electronic structure, magnetic and transport properties using angle-resolved photoemission spectroscopy (ARPES) and magnetotransport measurements [2]. Ongoing work involves applying both uniaxial and hydrostatic pressure to further understand the coupling between the metallic and magnetic subsystems [3].
[1] R. H. Friend et al., Adv. Phys. 36 (1987) 1–94.
[2] Y. U. Boucher et al., Phys. Rev. B 109 (2024) 085135.
[3] P. Popčević et al., Phys. Rev. B 107 (2023) 235149.