Superconductor-to-nonsuperconductor transition in (La1−xSrx)2CuO4 as investigated by transport and magnetic measurements

Abstract

Transport and magnetic properties of (${\mathrm{La}}_{1\mathrm{-}\mathrm{x}}$ ${\mathrm{Sr}}_{\mathrm{x}}$ ${)}_2$ ${\mathrm{CuO}}_4$ are systematically investigated over a wide composition range up to x=0.175 including a nonsuperconducting metal phase in the heavily doped region. Remarkable changes associated with the superconductor-to-nonsuperconductor transition are observed both in the Hall coefficient and the magnetic susceptibility, suggesting the modification of both charge and spin states.