High-field moment polarization in the ferromagnetic superconductor UCoGe

W. Knafo, T. D. Matsuda, D. Aoki, F. Hardy, G. W. Scheerer, G. Ballon, M. Nardone, A. Zitouni, C. Meingast, J. Flouquet

Research output: Contribution to journalArticlepeer-review

40 Citations (Scopus)


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 μ 0Hb 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 μ 0Hb of 12 T leads to field-induced reentrant superconductivity.

Original languageEnglish
Article number184416
JournalPhysical Review B - Condensed Matter and Materials Physics
Issue number18
Publication statusPublished - 2012 Nov 12


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