Structural anomalies at the disappearance of superconductivity in Ba2YCu3O7-δ: Evidence for charge transfer from chains to planes

R. J. Cava; B. Batlogg; K. M. Rabe; E. A. Rietman; P. K. Gallagher; L. W. Rupp

doi:10.1016/0921-4534(88)90015-9

Structural anomalies at the disappearance of superconductivity in Ba₂YCu₃O_7-δ: Evidence for charge transfer from chains to planes

R. J. Cava, B. Batlogg, K. M. Rabe, E. A. Rietman, P. K. Gallagher, L. W. Rupp

Research output: Contribution to journal › Article › peer-review

245 Scopus citations

Abstract

In systematic studies of oxygen-deficient Ba₂YCu₃O_7-δ, we have found that a structural anomaly occurs at the composition where bulk superconductivity disappears. The observed step-like increase in the c lattice parameter, when associated with changes in the atomic positions within the unit cell, indicates that superconductivity is lost due to a charge redistribution from the copper-oxygen chains to the copper-oxygen planes. This is microscopic experimental evidence establishing the role of secondary structural elements in the layered copper-oxide high-T_c superconductors.

Original language	English (US)
Pages (from-to)	523-527
Number of pages	5
Journal	Physica C: Superconductivity and its applications
Volume	156
Issue number	4
DOIs	https://doi.org/10.1016/0921-4534(88)90015-9
State	Published - Nov 1 1988
Externally published	Yes

All Science Journal Classification (ASJC) codes

Electronic, Optical and Magnetic Materials
Condensed Matter Physics
Energy Engineering and Power Technology
Electrical and Electronic Engineering

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10.1016/0921-4534(88)90015-9

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title = "Structural anomalies at the disappearance of superconductivity in Ba2YCu3O7-δ: Evidence for charge transfer from chains to planes",

abstract = "In systematic studies of oxygen-deficient Ba2YCu3O7-δ, we have found that a structural anomaly occurs at the composition where bulk superconductivity disappears. The observed step-like increase in the c lattice parameter, when associated with changes in the atomic positions within the unit cell, indicates that superconductivity is lost due to a charge redistribution from the copper-oxygen chains to the copper-oxygen planes. This is microscopic experimental evidence establishing the role of secondary structural elements in the layered copper-oxide high-Tc superconductors.",

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Structural anomalies at the disappearance of superconductivity in Ba₂YCu₃O_7-δ : Evidence for charge transfer from chains to planes. / Cava, R. J.; Batlogg, B.; Rabe, K. M.; Rietman, E. A.; Gallagher, P. K.; Rupp, L. W.

In: Physica C: Superconductivity and its applications, Vol. 156, No. 4, 01.11.1988, p. 523-527.

Research output: Contribution to journal › Article › peer-review

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