2008/06/30 by Rinat Ofer, Amit Keren, O. Chmaissem +3 · 1 citation
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.78.140508
corrected version, published in Phys. Rev. B 78, 140508(R)
openalex publication_date 2008/10/10 · arxiv created 2008/10/27 · arxiv updated 2009/12/01 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/01
Using muon spin rotation we determine the zero-temperature staggered antiferromagnetic order parameter M0 versus hole doping measured from optimum \ensuremathΔpm, in the (CaxLa_1\ensuremath-x)(Ba_1.75\ensuremath-xLa0.25+x)Cu3Oy system. In this system the maximum Tc and the superexchange J vary by 30% between families (x). M0(x,\ensuremathΔpm) is found to be x independent. Using neutron diffraction we also determine the lattice parameters variations for all x and doping. The oxygen buckling angle is found to change with x, implying a change in the holes kinetic energy. We discuss the surprising insensitivity of M0(x,\ensuremathΔpm) to the kinetic-energy variations in the framework of the t\text\ensuremath-J model.