Microscopic mechanism for the unusual antiferromagnetic order and the pressure-induced transition to ferromagnetism in USb2
| Autor: | Marcin M. Wysokiński |
|---|---|
| Rok vydání: | 2018 |
| Předmět: | |
| Zdroj: | Physical Review B. 97 |
| ISSN: | 2469-9969 2469-9950 |
| Popis: | Uranium diantimonide (${\mathrm{USb}}_{2}$) reflects enigmatic properties posing a substantial challenge for a microscopic modeling. Among others, it develops a nonstandard antiferromagnetic order of a ($\ensuremath{\uparrow}\ensuremath{\downarrow}\ensuremath{\downarrow}\ensuremath{\uparrow}$)-type along the [001] crystallographic direction, and under pressure it undergoes a transition to the ferromagnetic phase. Here we propose a minimal low-energy model of ${\mathrm{USb}}_{2}$ which, as we demonstrate at the mean-field level, accommodates a physical mechanism for the mentioned observations. Relying on the obtained results we also comment on the features of magnetism observed in other U-based compounds: ${\mathrm{UAs}}_{2},\phantom{\rule{0.28em}{0ex}}{\mathrm{UBi}}_{2}$, UAsSe, ${\mathrm{URh}}_{x}{\mathrm{Ir}}_{1\ensuremath{-}x}\mathrm{Ge}$, and ${\mathrm{UGe}}_{2}$. |
| Databáze: | OpenAIRE |
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