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Is La1.85Y0.15CuO4 an oxygen-doped cuprate superconductor?

W. Yu·B. Liang·P. Li·S. Fujino·T. Murakami·I. Takeuchi·R. L. Greene
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Abstract

We report resistivity, Hall effect, Nernst effect, and magnetoresistance measurements on T'-phase La1.85Y0.15CuO (LYCO) films prepared by pulsed laser deposition under different oxygen conditions. Our results show that superconductivity in LYCO originates from an oxygen-doped Mott-like insulator and not from a weakly correlated, half-filled band metal as proposed previously.

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W. Yu, B. Liang, P. Li, S. Fujino, T. Murakami, I. Takeuchi, R. L. Greene. 2006-10-31. Is La1.85Y0.15CuO4 an oxygen-doped cuprate superconductor?. https://arxiv.org/abs/cond-mat/0610889

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