Evolution of the partially frustrated magnetic order in CePd$_{1-x}$Ni$_x$Al
| Autor: | Huesges, Zita, Lucas, Stefan, Wunderlich, Sarah, Yokaichiya, Fabiano, Prokeš, Karel, Schmalzl, Karin, Lemée-Cailleau, Marie-Hélène, Pedersen, Bjørn, Fritsch, Veronika, Löhneysen, Hilbert v., Stockert, Oliver |
|---|---|
| Rok vydání: | 2017 |
| Předmět: | |
| Zdroj: | Phys. Rev. B 96, 144405 (2017) |
| Druh dokumentu: | Working Paper |
| DOI: | 10.1103/PhysRevB.96.144405 |
| Popis: | We report on a single-crystal neutron diffraction study of the evolution of the antiferromagnetic order in the heavy-fermion compound CePd$_{1-x}$Ni$_x$Al which exhibits partial geometric frustration due to its distorted Kagom\'e structure. The magnetic structure is found to be unchanged with a propagation vector $Q_\mathrm{AF} \approx (0.5~0~0.35)$ for all Ni concentrations $x$ up to $x_c \approx 0.14$. Upon approaching the quantum critical concentration $x_c$, the ordered moment vanishes linearly with N\'eel temperature $T_{\rm N}$, in good agreement with CePdAl under hydrostatic pressure. For all Ni concentrations, substantial short-range magnetic correlations are observed above $T_{\rm N}$ as a result of frustration. Comment: 6 pages, 4 figures |
| Databáze: | arXiv |
| Externí odkaz: |
|