Dilute Magnetism and Spin-Orbital Percolation Effects in Rh-doped Sr2IrO4
| Autor: | Clancy, J. P., Lupascu, A., Gretarsson, H., Islam, Z., Hu, Y. F., Casa, D., Nelson, C. S., Lamarra, S. C., Cao, G., Kim, Young-June |
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| Rok vydání: | 2013 |
| Předmět: | |
| Zdroj: | Phys. Rev. B 89, 054409 (2014) |
| Druh dokumentu: | Working Paper |
| DOI: | 10.1103/PhysRevB.89.054409 |
| Popis: | We have used a combination of resonant magnetic x-ray scattering (RMXS) and x-ray absorption spectroscopy (XAS) to investigate the properties of the doped spin-orbital Mott insulator Sr2Ir(1-x)Rh(x)O4 (0.07 < x < 0.70). We show that Sr2Ir(1-x)Rh(x)O4 represents a unique model system for the study of dilute magnetism in the presence of strong spin-orbit coupling, and provide evidence of a doping-induced change in magnetic structure and a suppression of magnetic order at x_c ~ 0.17. We demonstrate that Rh-doping introduces Rh3+/Ir5+ ions which effectively hole-dope this material. We propose that the magnetic phase diagram for this material can be understood in terms of a novel spin-orbital percolation picture. Comment: 9 pages, 7 figures |
| Databáze: | arXiv |
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