Local-moment magnetism in Mn-based pnictides
Abstract
We report a comprehensive study of electronic-correlation effects in Manganese-based antiferromagnetic pnictides BaMn2Pn2 (Pn=P,As,Sb,Bi). Our density functional theory plus slave-spin mean-field simulations indicate that all the compounds lie on the strong-coupling side of an itinerant-to-localized moment crossover, corresponding to the critical interaction strength for the Mott transition in the high-temperature paramagnetic phase. We also show that the experimental N\'eel temperature of each compound scales with the distance from this crossover.
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