2006/06/30 by Rinat Ofer, Galina Bazalitsky, Amit Kanigel +6
Materials Science · Physics and Astronomy · #Advanced Condensed Matter Physics #Magnetic and transport properties of perovskites and related materials #Physics of Superconductivity and Magnetism #cond-mat.str-el #cond-mat.supr-con
paper · pdf · doi:10.1103/physrevb.74.220508
With an additional inset in Fig.4
arxiv created 2006/08/08 · openalex publication_date 2006/12/13 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
We present extensive magnetic measurements of the (CaxLa_1\ensuremath-x)(Ba_1.75\ensuremath-xLa0.25+x)Cu3Oy system with its four different families (x) having a Tcmax(x) variation of 28% and minimal structural changes. For each family, we measured the N'eel temperature, the anisotropies of the magnetic interactions, and the spin-glass temperature. Our results exhibit a universal relation Tc=cJns for all families, where c\ensuremath∼1, J is the in-plane Heisenberg exchange, and ns is the superconducting carrier density. This relates cuprate superconductivity to magnetism in the same sense that phonon-mediated superconductivity is related to atomic mass.