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Proximity-Coupled CuO2 Planes in High-Tc Superconductors: Evidence from Pressure Experiments up to 34 GPa on Y2Ba4Cu7O15.32

Published inEurophysics Letters, vol. 20, no. 1, p. 41-46
Publication date1992
Abstract

The Tc of superconducting Y₂Ba₄Cu₇O₁₅.₃₂ is measured up to a pressure of 33.7 GPa. After an initial increase from 95 K to 101.7 K a decrease down to 26.6 K is found, with a clear kink at 22 GPa. We demonstrate that Y₂Ba₄Cu₇O₁₅.₃₂ behaves as a multilayer of YBa₂Cu₃O₇ and YBa₂Cu₄O₈ building blocks coupled via the proximity effect. These data are not consistent with the idea that the coupling of two adjacent CuO₂ planes is necessary for superconductivity.

Citation (ISO format)
EENIGE, E.N. van et al. Proximity-Coupled CuO<sub>2</sub> Planes in High-<i>T</i><sub>c</sub> Superconductors: Evidence from Pressure Experiments up to 34 GPa on Y<sub>2</sub>Ba<sub>4</sub>Cu<sub>7</sub>O<sub>15.32</sub>. In: Europhysics Letters, 1992, vol. 20, n° 1, p. 41–46. doi: 10.1209/0295-5075/20/1/008
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ISSN of the journal0295-5075
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