Crystal growth, ferromagnetism and electronic structure of van der Waals NbCo1.1Te2

Recent advances in the synthesis of intercalated compounds have opened new avenues for exploring novel magnetic properties. This work focuses on the synthesis of high-quality single crystals of NbCo1.1Te2, achieved through a meticulously optimized chemical vapor transport method that facilitates effective cobalt intercalation into the van der Waals gaps of NbCoTe2. Comprehensive characterizations, including magnetic susceptibility, angle-resolved photoemission spectroscopy (ARPES), and magnetoresistance measurements, revealed pronounced room-temperature ferromagnetism and significant magnetic anisotropy, along with a confirmed metallic nature of NbCo1.1Te2. These findings underscore the transformative effects of cobalt intercalation on the physical properties of NbCo1.1Te2, demonstrating its promising potential for advanced electronic and spintronic applications, and laying the groundwork for future research on related materials.