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- W2034675080 abstract "Abstract We have measured the temperature dependence of the change Δ λ ab ( T )= λ ab ( T )− λ ab ( T =0) of the in-plane London penetration depth λ ab in the electron-doped cuprate superconductor Nd 1.85 Ce 0.15 CuO 4− y (NCCO). An anomalous temperature dependence below about 4 K is observed. In contrast to the expected monotonous decrease of λ ab ( T ) with decreasing temperature, λ ab ( T ) is found to increase with decreasing temperature below 4 K resulting in a non-monotonous overall temperature dependence. This anomalous behavior was found to be absent in analogous measurements performed on Pr 1.85 Ce 0.15 CuO 4− y (PCCO). From this, we conclude that the anomalous behavior of NCCO is caused by the influence of the Nd 3+ magnetic moments. Correcting for the temperature-dependent susceptibility due to the Nd 3+ moments, an exponential λ ab ( T ) dependence is obtained indicating s-wave pairing in the electron-doped superconductors." @default.
- W2034675080 created "2016-06-24" @default.
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- W2034675080 date "2000-07-01" @default.
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- W2034675080 title "Low-temperature anomalies of the superconducting properties of Nd1.85Ce0.15CuO4−y" @default.
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- W2034675080 doi "https://doi.org/10.1016/s0921-4526(99)02341-8" @default.
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