Competition between charge- and spin-density-wave order and superconductivity in La(1.875)Ba(0.125-x)Sr(x)CuO(4) |
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Authors: | Fujita M Goka H Yamada K Matsuda M |
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Affiliation: | Institute for Chemical Research, Kyoto University, Gokasho, Uji 610-0011, Japan. |
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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. |
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