Extraordinary effect of aluminum substitution on the upper critical field of Ba2YCu3O7

R. B. Van Dover, L. F. Schneemeyer, J. V. Waszczak, D. A. Rudman, J. Y. Juang, J. A. Cutro

Research output: Contribution to journalArticle

26 Scopus citations

Abstract

A 10% substitution of Al on the Cu(1) (chain) site of single crystals of Ba2YCu3O7 drives the material to the edge of the orthorhombic-tetragonal transition and strongly decreases the resistivity and upper critical field, compared to the unsubstituted parent compound, but has little effect on Tc. The coherence length in the ĝ-b^ plane increases twofold, while the coherence length along the axis is unchanged. These results can be reconciled with the conventional relationships between superconducting and normal-state properties only if a twofold change in the Fermi-surface area is postulated.

Original languageEnglish
Pages (from-to)2932-2935
Number of pages4
JournalPhysical Review B
Volume39
Issue number4
DOIs
StatePublished - 1 Jan 1989

Fingerprint Dive into the research topics of 'Extraordinary effect of aluminum substitution on the upper critical field of Ba2YCu3O7'. Together they form a unique fingerprint.

  • Cite this

    Van Dover, R. B., Schneemeyer, L. F., Waszczak, J. V., Rudman, D. A., Juang, J. Y., & Cutro, J. A. (1989). Extraordinary effect of aluminum substitution on the upper critical field of Ba2YCu3O7. Physical Review B, 39(4), 2932-2935. https://doi.org/10.1103/PhysRevB.39.2932