Spin glass state and enhanced spiral phase in doped delafossite oxide CuCrO2
| Autor: | Yan, Z. R., Qin, M. H., Dong, S., Zeng, M., Lu, X. B., Gao, X. S., Liu, J. M. |
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| Rok vydání: | 2016 |
| Předmět: | |
| Zdroj: | Physical Review B 94, 024410 (2016) |
| Druh dokumentu: | Working Paper |
| DOI: | 10.1103/PhysRevB.94.024410 |
| Popis: | In this work, we study the doping effects on the magnetic states of CuCrO2 based on the classical frustrated spin model [Lin et al., Phys. Rev. B 89, 220405(R) (2014)]. Several experimental observations can be well reproduced by the Monte Carlo simulations of the modified spin models. Our work suggests that the disorder induced by V/Al doping cooperated with the frustration in the system may contribute to the emergence of the spin glass state. Furthermore, the hole-doping by Mg2+ substituting Cr3+ enhances the quantum fluctuations and bond disorder which modulate the biquadratic exchanges, and in turn results in the promotion of the spiral phase, consistent with the experimental report. Comment: 19 pages, 7 figures, to be published in Physical Review B |
| Databáze: | arXiv |
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