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arXiv · 2510.26595

Local-moment magnetism in Mn-based pnictides

Matteo Crispino·Niklas Witt·Tommaso Gorni·Giorgio Sangiovanni·Luca de' Medici
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Abstract

We report a comprehensive study of electronic-correlation effects in Manganese-based antiferromagnetic pnictides BaMn$_2$Pn$_2$ (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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Matteo Crispino, Niklas Witt, Tommaso Gorni, Giorgio Sangiovanni, Luca de' Medici. 2025-10-30. Local-moment magnetism in Mn-based pnictides. https://doi.org/10.1103/yzkk-71cr

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