Oxygen deficiency in Ba2YCu3O7-δ: The need for a microscopic description

B. Batlogg, R. J. Cava

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The physical properties, such as crystal structure, resistivity, Tc and normal state susceptibility have been studied in Ba2YCu3O7-δ as a function of oxygen deficiency δ. Oxygen was removed in a controlled way at relatively low temperatures employing a Zr-gettering technique. Not only do we find a second superconducting phase with Tc∼60 K and with new (short-range) crystallographic periodicity along the b-direction, but we also find that all physical properties depend on the manner in which oxygen is removed. Variations of physical properties among samples with the same over-all oxygen content can be consistently associated with the occupation of the various O-sites in the structure.

Original languageEnglish (US)
Pages (from-to)173-176
Number of pages4
JournalPhysica B+C
Issue number1-3
StatePublished - Dec 1987
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • General Engineering


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