High-field moment polarization in the ferromagnetic superconductor UCoGe
| Autor: | Knafo, W., Matsuda, T. D., Aoki, D., Hardy, F., Scheerer, G. W., Ballon, G., Nardone, M., Zitouni, A., Meingast, C., Flouquet, J. |
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| Rok vydání: | 2012 |
| Předmět: | |
| Zdroj: | Phys. Rev. B 86, 184416 (2012) |
| Druh dokumentu: | Working Paper |
| DOI: | 10.1103/PhysRevB.86.184416 |
| Popis: | We report magnetization and magnetoresistivity measurements on the isostructural ferromagnetic superconductors UCoGe and URhGe in magnetic fields up to 60 T and temperatures from 1.5 to 80 K. At low-temperature, a moment polarization in UCoGe in a field $\mu_0\mathbf{H}\parallel\mathbf{b}$ of around 50 T leads to well-defined anomalies in both magnetization and magnetoresistivity. These anomalies vanish in temperatures higher than 30-40 K, where maxima in the magnetic susceptibility and the field-induced variation of the magnetoresistivity are found. A comparison is made between UCoGe and URhGe, where a moment reorientation in a magnetic field $\mu_0\mathbf{H}\parallel\mathbf{b}$ of 12 T leads to field-induced reentrant superconductivity. Comment: 4 pages, 4 figures |
| Databáze: | arXiv |
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