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The oxygen isotope effect on the superconductivity, stripe phase andstructure transition is systematically investigated inLa$_{1.6-x}$Nd$_{0.4}$Sr$_{x}$CuO$_4$ with static stripe phase. Substitution of$^{16}$O by $^{18}$O leads to a decrease in superconducting transitiontemperature T$_C$, while enhances the temperature of the structural transitionfrom low-temperature-orthorhombic (LTO) phase to low-temperature-tetragonal(LTT) phase. Compared to the Nd free sample, a larger isotope effect on $T_C$is observed in La$_{1.6-x}$Nd$_{0.4}$Sr$_{x}$CuO$_4$. These results indicatethat the distortion of CuO$_2$ plane suppresses the superconductivity, giving adirect evidence for the competing of stripe phase and superconductivity becausethe distortion of CuO$_2$ plane enhances the stripe phase.Comment: 4 pages, 5 figure

physical review. b, condensed matter and materials physics

Oxygen isotope effect on the superconductivity and stripe phase in<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:msub><mml:mi mathvariant="normal">La</mml:mi><mml:mrow><mml:mn>1.6</mml:mn><mml:mo>−</mml:mo><mml:mi>x</mml:mi></mml:mrow></mml:msub><mml:msub><mml:mi mathvariant="normal">Nd</mml:mi><mml:mn>0.4</mml:mn></mml:msub><mml:msub><mml:mi mathvariant="normal">Sr</mml:mi><mml:mi>x</mml:mi></mml:msub><mml:mi mathvariant="normal">Cu</mml:mi><mml:msub><…

Oxygen isotope effect on the superconductivity and stripe phase inLa1.6−xNd0.4SrxCu<…