Superconducting Y1Ba2Cu3O 7-x/Nd1.85Ce0.15CuO4-y bilayer thin films

S. N. Mao, X. X. Xi, Qi Li, I. Takeuchi, S. Bhattacharya, C. Kwon, C. Doughty, A. Walkenhorst, T. Venkatesan, C. B. Whan, J. L. Peng, R. L. Greene

Research output: Contribution to journalArticle

23 Citations (Scopus)

Abstract

Bilayers of Y1Ba2Cu3O7-x(YBCO)/ Nd1.85Ce0.15CuO4-y(NCCO), in which both layers were superconducting, were fabricated in situ by pulsed laser deposition. Using N2O as the reactive gas, we were able to meet the conflicting processing requirements, oxygenation for YBCO, and reduction for NCCO, in the same sample with a specific cooling procedure. The bilayer thin films were c-axis oriented with a transition temperature, Tco, of 88.5 K for YBCO and 18.5 K for NCCO. Supercurrent was observed across the interface of the YBCO and NCCO superconducting layers, indicating the phase coherence between these superconductors.

Original languageEnglish (US)
Pages (from-to)2425-2427
Number of pages3
JournalApplied Physics Letters
Volume62
Issue number19
DOIs
StatePublished - Dec 1 1993

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phase coherence
oxygenation
thin films
pulsed laser deposition
transition temperature
cooling
requirements
gases

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy (miscellaneous)

Cite this

Mao, S. N., Xi, X. X., Li, Q., Takeuchi, I., Bhattacharya, S., Kwon, C., ... Greene, R. L. (1993). Superconducting Y1Ba2Cu3O 7-x/Nd1.85Ce0.15CuO4-y bilayer thin films. Applied Physics Letters, 62(19), 2425-2427. https://doi.org/10.1063/1.109385
Mao, S. N. ; Xi, X. X. ; Li, Qi ; Takeuchi, I. ; Bhattacharya, S. ; Kwon, C. ; Doughty, C. ; Walkenhorst, A. ; Venkatesan, T. ; Whan, C. B. ; Peng, J. L. ; Greene, R. L. / Superconducting Y1Ba2Cu3O 7-x/Nd1.85Ce0.15CuO4-y bilayer thin films. In: Applied Physics Letters. 1993 ; Vol. 62, No. 19. pp. 2425-2427.
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Mao, SN, Xi, XX, Li, Q, Takeuchi, I, Bhattacharya, S, Kwon, C, Doughty, C, Walkenhorst, A, Venkatesan, T, Whan, CB, Peng, JL & Greene, RL 1993, 'Superconducting Y1Ba2Cu3O 7-x/Nd1.85Ce0.15CuO4-y bilayer thin films', Applied Physics Letters, vol. 62, no. 19, pp. 2425-2427. https://doi.org/10.1063/1.109385

Superconducting Y1Ba2Cu3O 7-x/Nd1.85Ce0.15CuO4-y bilayer thin films. / Mao, S. N.; Xi, X. X.; Li, Qi; Takeuchi, I.; Bhattacharya, S.; Kwon, C.; Doughty, C.; Walkenhorst, A.; Venkatesan, T.; Whan, C. B.; Peng, J. L.; Greene, R. L.

In: Applied Physics Letters, Vol. 62, No. 19, 01.12.1993, p. 2425-2427.

Research output: Contribution to journalArticle

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T1 - Superconducting Y1Ba2Cu3O 7-x/Nd1.85Ce0.15CuO4-y bilayer thin films

AU - Mao, S. N.

AU - Xi, X. X.

AU - Li, Qi

AU - Takeuchi, I.

AU - Bhattacharya, S.

AU - Kwon, C.

AU - Doughty, C.

AU - Walkenhorst, A.

AU - Venkatesan, T.

AU - Whan, C. B.

AU - Peng, J. L.

AU - Greene, R. L.

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AB - Bilayers of Y1Ba2Cu3O7-x(YBCO)/ Nd1.85Ce0.15CuO4-y(NCCO), in which both layers were superconducting, were fabricated in situ by pulsed laser deposition. Using N2O as the reactive gas, we were able to meet the conflicting processing requirements, oxygenation for YBCO, and reduction for NCCO, in the same sample with a specific cooling procedure. The bilayer thin films were c-axis oriented with a transition temperature, Tco, of 88.5 K for YBCO and 18.5 K for NCCO. Supercurrent was observed across the interface of the YBCO and NCCO superconducting layers, indicating the phase coherence between these superconductors.

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Mao SN, Xi XX, Li Q, Takeuchi I, Bhattacharya S, Kwon C et al. Superconducting Y1Ba2Cu3O 7-x/Nd1.85Ce0.15CuO4-y bilayer thin films. Applied Physics Letters. 1993 Dec 1;62(19):2425-2427. https://doi.org/10.1063/1.109385