title: Competition between charge- and spin-density-wave order and superconductivity in La(1.875)Ba(0.125-x)Sr(x)CuO(4).
abstract: We have performed a series of elastic neutron scattering measurements on 1/8-hole doped La(1.875)-Ba(0.125-x)Sr(x)CuO(4) single crystals with x = 0.05, 0.06, 0.075, and 0.085. Both charge-density-wave (CDW) and spin-density-wave orders are found to develop simultaneously below the structural transition temperature between the low-temperature orthorhombic (LTO) and low-temperature tetragonal (LTT) or low-temperature less-orthorhombic (LTLO) phases. In the ground state the CDW order is observed only in the LTT/LTLO phase and drastically degrades towards the LTO boundary. The x dependence of T(c) strongly suggests a direct effect of the CDW order on the suppression of superconductivity.
authors.affiliation: Institute for Chemical Research, Kyoto University, Gokasho, Uji 610-0011, Japan.
authors.forename: M
authors.initials: M
authors.lastname: Fujita
authors.forename: H
authors.initials: H
authors.lastname: Goka
authors.forename: K
authors.initials: K
authors.lastname: Yamada
authors.forename: M
authors.initials: M
authors.lastname: Matsuda