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Similarity between Ni and Zn impurity effects on the superconductivity and Cu-spin correlation in La2-xSrxCu1-yNiyO4 high-Tc cuprates: A comparison based on the hole trapping by Ni

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arxiv 1103.1265 v2 pith:DXCDAU4U submitted 2011-03-07 cond-mat.supr-con cond-mat.str-el

Y. Tanabe , T. Adachi , K. Suzuki , T. Kawamata , Risdiana , T. Suzuki , I. Watanabe , Y. Koike This is my paper · ORCID
classification cond-mat.supr-concond-mat.str-el
keywords correlationcu-spinholeholessuperconductivitybeendegreeeffects
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Ni-substitution effects on the superconductivity and Cu-spin correlation have been investigated in La2-xSrxCu1-yNiyO4 from the electrical resistivity and muon spin relaxation measurements, taking into account the hole trapping by Ni recently suggested. It has been found that the Ni-substitution suppresses the superconductivity, induces the localization of holes and develops the Cu-spin correlation to the same degree as the Zn substitution. These suggest that Ni with a trapped hole tends to give rise to potential scattering of holes in the CuO2 plane to the same degree as Zn, being discussed in relation to the so-called dynamical stripe correlations of spins and holes.

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