Variation of superconductivity with carrier concentration in oxygen-doped YBa2Cu3O7-y

Z. Z. Wang, J. Clayhold, N. P. Ong, J. M. Tarascon, Laura Greene, W. R. McKinnon, G. W. Hull

Research output: Contribution to journalArticle

Abstract

The Hall coefficient RH, the volume fraction f showing the Meissner effect, and the superconducting transition temperature Tc have been measured in the high-Tc oxide YBa2Cu3O7-y for a range of oxygen vacancy concentration 0.0<y<0.7. We find that RH, f, and Tc are insensitive to y over the range 0.1<y<0.5. In this range, superconductivity at 55 K is possible (with a carrier density of 1.4×1021 cm-3), even with severe loss of connectivity in the CuO chains. The data are consistent with superconductivity occurring only in the CuO planes. A sharp transition in RH is also seen when y exceeds 0.50.

Original languageEnglish (US)
Pages (from-to)7222-7225
Number of pages4
JournalPhysical Review B
Volume36
Issue number13
DOIs
StatePublished - Jan 1 1987

ASJC Scopus subject areas

  • Condensed Matter Physics

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    Wang, Z. Z., Clayhold, J., Ong, N. P., Tarascon, J. M., Greene, L., McKinnon, W. R., & Hull, G. W. (1987). Variation of superconductivity with carrier concentration in oxygen-doped YBa2Cu3O7-y. Physical Review B, 36(13), 7222-7225. https://doi.org/10.1103/PhysRevB.36.7222