Superconductor-to-nonsuperconductor transition in ( La 1 − x Sr x ) 2 CuO 4 as investigated by transport and magnetic measurements

摘要: Transport and magnetic properties of (${\mathrm{La}}_{1\mathrm{\ensuremath{-}}\mathrm{x}}$${\mathrm{Sr}}_{\mathrm{x}}$${)}_{2}$${\mathrm{CuO}}_{4}$ are systematically investigated over a wide composition range up to x=0.175 including nonsuperconducting metal phase in the heavily doped region. Remarkable changes associated with superconductor-to-nonsuperconductor transition observed both Hall coefficient susceptibility, suggesting modification charge spin states.