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

doi:10.1103/PhysRevB.86.184416

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

Materials Processing and Characterization Division

Research output: Contribution to journal › Article › peer-review

32 Citations (Scopus)

Abstract

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 language	English
Article number	184416
Journal	Physical Review B - Condensed Matter and Materials Physics
Volume	86
Issue number	18
DOIs	https://doi.org/10.1103/PhysRevB.86.184416
Publication status	Published - 2012 Nov 12

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Condensed Matter Physics

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High-field moment polarization in the ferromagnetic superconductor UCoGe. / Knafo, W.; Matsuda, T. D.; Aoki, D.; Hardy, F.; Scheerer, G. W.; Ballon, G.; Nardone, M.; Zitouni, A.; Meingast, C.; Flouquet, J.

In: Physical Review B - Condensed Matter and Materials Physics, Vol. 86, No. 18, 184416, 12.11.2012.

Research output: Contribution to journal › Article › peer-review

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AU - Aoki, D.

AU - Hardy, F.

AU - Scheerer, G. W.

AU - Ballon, G.

AU - Nardone, M.

AU - Zitouni, A.

AU - Meingast, C.

AU - Flouquet, J.

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