Origin of the semiconducting-to-superconducting transition of La2-xCa1+xCu2O6 under high-oxygen-pressure annealing

H. Shibata; A. Matsuda; K. Kinoshita; T. Watanabe; T. Yamada

doi:10.1103/PhysRevB.49.12315

Origin of the semiconducting-to-superconducting transition of La2-xCa1+xCu2O6 under high-oxygen-pressure annealing

H. Shibata, A. Matsuda, K. Kinoshita, T. Watanabe, T. Yamada

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

4 Citations (Scopus)

Abstract

The Madelung energy of La2-xCa1+xCu2O6 system, whose properties change from semiconductor to superconductor under high-oxygen-pressure annealing, is calculated. We find the increase in VA, the difference in Madelung site potential between the apex and the CuO2 planes oxygen, promotes the superconducting transition in this system. Slight intercalation of oxygen between two CuO2 planes is found to be of primary importance in determining VA.

Original language	English
Pages (from-to)	12315-12317
Number of pages	3
Journal	Physical Review B
Volume	49
Issue number	17
DOIs	https://doi.org/10.1103/PhysRevB.49.12315
Publication status	Published - 1994 Jan 1
Externally published	Yes

ASJC Scopus subject areas

Condensed Matter Physics

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abstract = "The Madelung energy of La2-xCa1+xCu2O6 system, whose properties change from semiconductor to superconductor under high-oxygen-pressure annealing, is calculated. We find the increase in VA, the difference in Madelung site potential between the apex and the CuO2 planes oxygen, promotes the superconducting transition in this system. Slight intercalation of oxygen between two CuO2 planes is found to be of primary importance in determining VA.",

author = "H. Shibata and A. Matsuda and K. Kinoshita and T. Watanabe and T. Yamada",

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AU - Shibata, H.

AU - Matsuda, A.

AU - Kinoshita, K.

AU - Watanabe, T.

AU - Yamada, T.

PY - 1994/1/1

Y1 - 1994/1/1

N2 - The Madelung energy of La2-xCa1+xCu2O6 system, whose properties change from semiconductor to superconductor under high-oxygen-pressure annealing, is calculated. We find the increase in VA, the difference in Madelung site potential between the apex and the CuO2 planes oxygen, promotes the superconducting transition in this system. Slight intercalation of oxygen between two CuO2 planes is found to be of primary importance in determining VA.

AB - The Madelung energy of La2-xCa1+xCu2O6 system, whose properties change from semiconductor to superconductor under high-oxygen-pressure annealing, is calculated. We find the increase in VA, the difference in Madelung site potential between the apex and the CuO2 planes oxygen, promotes the superconducting transition in this system. Slight intercalation of oxygen between two CuO2 planes is found to be of primary importance in determining VA.

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