Microscopic mechanism for the unusual antiferromagnetic order and the pressure-induced transition to ferromagnetism in USb${}_2$

Abstract

Uranium dipnictide USb${}_2$ reflects enigmatic properties posing a substantial challenge for a microscopic modeling. Among others, it develops a nonstandard antiferromagnetic order of a $\uparrow \downarrow \downarrow \uparrow$-type along [001] crystallographic direction, and under pressure it undergoes transition to the ferromagnetic phase. Here we propose a minimal low-energy model of USb${}_2$ which, as we demonstrate at the mean-field level, accommodates physical mechanism for mentioned observations. Relying on the obtained results we also comment on the features of magnetism observed in other U-based compounds: UAs${}_2$, UBi${}_2$, UAsSe, URh${}_x$Ir${}_{1-x}$Ge and UGe${}_2$.

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Cited by in corpus (5)

• Orbital-selective Kondo entanglement and antiferromagnetic order in USb${}_2$
• Mechanism for transitions between ferromagnetic and antiferromagnetic orders in $d$-electron metallic magnets
• Topological Mott insulator in the odd-integer filled Anderson lattice model with Hatsugai-Kohmoto interactions
• Cross-over behavior of the localized to itinerant transition of 5f electrons in the antiferromagnetic Kondo lattice USb2
• Valence instability across magnetostructural transition in USb${}_2$