Anomalous Transport Properties in Superconducting Nd1.85Ce0.15CuO4±δ
Wu Jiang, S. N. Mao, X. X. Xi, Xiuguang Jiang, J. L. Peng, T. Venkatesan, C. J. Lobb, R. L. Greene
DOI 10.1103/PhysRevLett.73.1291 · Physical Review Letters
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Abstract
We report a comprehensive study of the in-plane transport properties of Nd2−xCexCuO4±δ epitaxial thin films and crystals by both increasing and decreasing δ with Ce content fixed at x≈0.15. We find a remarkable correlation between the appearance of superconductivity and (1) a positive magnetoresistance in the normal state, (2) a positive contribution to the otherwise negative Hall coefficient, and (3) an anomalously large Nernst effect. These results strongly suggest that both holes and electrons participate in the charge transport for the superconducting phase of Nd2−xCexCuO4±δ.
Source-reported materials — not catalogue approval
| Formula | Reported Tc (K) | Pressure (GPa) | Type |
|---|---|---|---|
| Nd1.85Ce0.15CuO4±δ Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 21 | Pressure not reported | onset |
| Nd1.85Ce0.15CuO4±δ Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 21 | Pressure not reported | onset |
| Nd1.85Ce0.15CuO4+δ Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 21.3 | Pressure not reported | midpoint |
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