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The superconducting properties of YBa2Cu4O8 single crystals under hydrostatic pressure (up to 9.5 GPa)

✍ Scribed by D. Braithwaite; G. Chouteau; G. Martinez; J.L. Hodeau; M. Marezio; J. Karpinski; E. Kaldis; S. Rusiecki; E. Jilek

Publisher: Elsevier Science
Year: 1991
Tongue: English
Weight: 437 KB
Volume: 178
Category: Article
ISSN: 0921-4534
DOI: 10.1016/0921-4534(91)90160-z

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✦ Synopsis

dP of YBa2Cu408 single crystals has been measured up to 9 GPa under hydrostatic pressure. The large and positive initial value (dTc/dP)o= 5.5 K/GPa is confirmed. To(P) saturates above 5 GPa. Dramatic changes, in the Tc(P) behavior are observed when the pressure is non-hydrostatic. They are caused by the twinning of the crystals. Opposite to the case of YBa2Cu307, the results for hydrostatic pressure are well reproducible. This is probably due to the well defined oxygen stoichiometry of YBa2Cu408 single crystals.

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