2001/01/24 by M. Minakata, Makoto Minakata, Y. Maeno · 2 citations
Chemistry · Materials Science · Physics and Astronomy · #Advanced Condensed Matter Physics #Anisotropy #Chemistry #Condensed matter physics #Crystallography #Impurity #Ising model #Magnetic and transport properties of perovskites and related materials #Magnetic field #Magnetic moment #Magnetism #Magnetization #Physics #Physics of Superconductivity and Magnetism #Quantum mechanics #Spin (aerodynamics) #Thermodynamics #cond-mat.str-el
paper · pdf · doi:10.1103/physrevb.63.180504
5 pages, 4figures
arxiv created 2001/01/24 · openalex publication_date 2001/04/04 · arxiv updated 2009/11/30 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/05
We report unusual effects of nonmagnetic impurities on the spin-triplet superconductor Sr2RuO4. The substitution of nonmagnetic Ti4+ for Ru4+ induces localized-moment magnetism characterized by unexpected Ising anisotropy with the easy axis along the interlayer c direction. Furthermore, for x(Ti)>~0.03 magnetic ordering occurs in the metallic state with the remnant magnetization along the c axis. We argue that the localized moments are induced in the Ru4+ and/or oxygen ions surrounding Ti4+ and that the ordering is due to their interaction mediated by itinerant Ru-4d electrons with strong spin fluctuations.