Neutron Diffraction Study on Single-crystalline UAu${_2}$Si$_2$
| Autor: | Tabata, Chihiro, Klicpera, Milan, Ouladdiaf, Bachir, Saito, Hiraku, Vališka, Michal, Uhlířová, Klára, Miura, Naoyuki, Sechovský, Vladimír, Amitsuka, Hiroshi |
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| Rok vydání: | 2017 |
| Předmět: | |
| Druh dokumentu: | Working Paper |
| DOI: | 10.1103/PhysRevB.96.214442 |
| Popis: | Magnetic structure of tetragonal UAu$_2$Si$_2$ was investigated by single-crystal neutron diffraction experiments. Below $T_{\rm N}$ = 20 K it orders antiferromagnetically with a propagation vector of $k = (2/3, 0, 0)$ and magnetic moments of uranium ions pointing along the tetragonal $c$-axis. Weak signs of the presence of a ferromagnetic component of magnetic moment were traced out.Taking into account a group theory calculation and experimental results of magnetization and $^{29}$Si-NMR, the magnetic structure is determined to be a squared-up antiferromagnetic structure, with a stacking sequence ($+ + -$) of the ferromagnetic $ac$-plane sheets along the $a$-axis. This result highlights similar magnetic correlations in UAu$_2$Si$_2$ and isostructural URu$_2$Si$_2$. Comment: 7 pages, 7 figures |
| Databáze: | arXiv |
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