and Their Alloys

The Ruderman-Kittel-Kasuya-Yosida (RKKY) interaction has been used to understand the origin of (anti)ferromagnetic behavior in some magnetic transition metal intercalated dichalcogenides (TMDs). Despite the clean picture that RKKY presents, little has been said about the interplay of intercalate magnetism with the low temperature phases in disulfide TMDs. By using angle resolved photoemission spectroscopy (ARPES) and optical spectroscopies we are able to provide a new picture for the onset of magnetic phases over a family of transition metal intercalates on the basis of charge transfer. The interaction between magnetism and other forms of order in 2H-NbS₂ and 2H-TaS₂ will also be explored.