Effects of hole-doping on the magnetic ground state and excitations in the edge-sharing CuO${}_2$ chains of Ca${}_{2+x}$Y${}_{2-x}$Cu${}_5$O${}_{10}$

M. Matsuda, K. Kakurai, S. Kurogi +5

Neutron scattering experiments were performed on the undoped and hole-doped Ca${}_{2+x}$Y${}_{2-x}$Cu${}_5$O${}_{10}$, which consists of ferromagnetic edge-sharing CuO${}_2$ chains. It was p…