Anomalous absence of pressure effect on transition temperature in the electron-doped superconductor Nd1.85Ce0.15CuO4–δ
✍ Scribed by Murayama, C.; Môri, N.; Yomo, S.; Takagi, H.; Uchida, S.; Tokura, Y.
- Book ID
- 109758973
- Publisher
- Nature Publishing Group
- Year
- 1989
- Tongue
- English
- Weight
- 234 KB
- Volume
- 339
- Category
- Article
- ISSN
- 0028-0836
- DOI
- 10.1038/339293a0
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Pressure dependence of the transition temperature r, in the electron-doped superconductor Nd,.85Ce,,,5Cu04 is considered to be anomalous since T, hardly varies with pressure, in contrast to the case of the hole-doped superconductors where there is initially an increase in T, with pressure reaching a
Superconducting transition onset around 30-31 K was reported for the repeated-vacuum/Ar-annealed and liquid-nitrogen-quenched sample of the high T c electron superconductor Nd1.85CeO.15Cu04\_0 (0 = 0.07(2)). Vortex lattice melting near T c was observed for this oxygen-reduced superconductor. Low fi
We observe a sign reversal of the Hall resistivity in the mixed state of the n-type superconductor Ndl.s5Ceo.15CuO4. ~. Such all anomaly, which has also been observed earlier in the p-type oxide superconductors, has been widely attributed to thermoelectric effects, pinning effects, or else to compli