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Possible Existence of the Stripe Correlations in Electron-Doped Superconducting Cuprates Eu1.85Ce0.15Cu1-yNiyO4+α-δ Studied by Muon-Spin-Relaxation

Possible Existence of the Stripe Correlations in Electron-Doped Superconducting Cuprates Eu1.85Ce0.15Cu1-yNiyO4+α-δ Studied by Muon-Spin-Relaxation
Risdiana, L. Safriani, W. A. Somantri, T. Saragi, T. Adachi, I. Kawasaki,I. Watanaber, Y. Koike
Universitas Padjadjaran, Advanced Materials Research Vol. 896 (2014) pp 354-357
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Universitas Padjadjaran, Advanced Materials Research Vol. 896 (2014) pp 354-357
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Partially Ni-substituted electron-doped superconducting cuprates of Eu1.85Ce0.15Cu1-yNiyO4+α-δ (ECCNO) with y = 0, 0.01, 0.02 and 0.05 have been studied by muon-spin-relaxation (µSR) measurements, in order to elucidate whether or not the dynamical stripe 4+a-d correlations of spins and charges exist in electron-doped cuprates. It has been found that thedevelopment of the Cu-spin correlation is induced at low temperatures through the Ni substitution and that, for y = 0.02, a muon-spin precession due to a long-range magnetic order has been observed at 10 K. These results suggest a possibility that the stripe model can globally explain the high-Tc superconductivity in both hole- and electron-doped cuprates.

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