Exchange couplings for Mn ions in CdTe: validity of spin models for dilute magnetic II-VI semiconductors

Thorben Linneweber, Jörg Bünemann, Ute Löw +2

We employ density-functional theory (DFT) in the generalized gradient approximation (GGA) and its extensions GGA+$U$ and GGA+Gutzwiller to calculate the magnetic exchange couplings…