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Scheerer, G. W.*; Knafo, W.*; 青木 大*; Nardone, M.*; Zitouni, A.*; Bard, J.*; Billette, J.*; Barata, J.*; Jaudet, C.*; Suleiman, M.*; et al.
Physical Review B, 89(16), p.165107_1 - 165107_12, 2014/04
被引用回数:10 パーセンタイル:41.74(Materials Science, Multidisciplinary)Fermi surface of URuSi has been studied by measuring the quantum oscillation at low temperature and high magnetic field up to 81T. The data suggest interplay between Fermi surface, magnetic properties and the hidden order.
Knafo, W.*; 松田 達磨; 青木 大*; Hardy, F.*; Scheerer, G. W.*; Ballon, G.*; Nardone, M.*; Zitouni, A.*; Meingast, C.*; Flouquet, J.*
Physical Review B, 86(18), p.184416_1 - 184416_4, 2012/00
被引用回数:40 パーセンタイル:81.68(Materials Science, Multidisciplinary)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 H b of around 50T 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 H b of 12T leads to field-induced reentrant superconductivity.