Relation between crystal structure and superconductivity in La2-xBixCuO4+δ with excess oxygen

Masatsune Kato; T. Aoki; H. Chizawa; Yoji Koike; Y. Ono; Takashi Noji; T. Hikita; Y. Saito

doi:10.1016/0921-4534(94)91392-7

Relation between crystal structure and superconductivity in La_2-xBi_xCuO_4+δ with excess oxygen

Masatsune Kato, T. Aoki, H. Chizawa, Yoji Koike, Y. Ono, Takashi Noji, T. Hikita, Y. Saito

ENG - Applied Physics

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

2 Citations (Scopus)

Abstract

The relation between the crystal structure and superconductivity has been investigated for La_2-xBi_xCuO_4+δ with excess oxygen, in which the phase separation observed in La₂CuO_4+δ is suppressed. In the range of 0.03≲δ≲0.1 and T≲100 K, the crystal structure is orthorhombic for x = 0.05, while it is tetragonal for x=0.10. With increasing δ, T_c increases and then reaches the maximum value, 20-25 K, at δ ≳ 0.05 for 0.05≤x≤0.10, independent of the crystal structure. The overall symmetry of the crystal structure is concluded not to be so responsible for the appearance of high-T_c superconductivity.

Original language	English
Pages (from-to)	337-338
Number of pages	2
Journal	Physica C: Superconductivity and its applications
Volume	235-240
Issue number	PART 1
DOIs	https://doi.org/10.1016/0921-4534(94)91392-7
Publication status	Published - 1994 Jan 1

ASJC Scopus subject areas

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(94)91392-7

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abstract = "The relation between the crystal structure and superconductivity has been investigated for La2-xBixCuO4+δ with excess oxygen, in which the phase separation observed in La2CuO4+δ is suppressed. In the range of 0.03≲δ≲0.1 and T≲100 K, the crystal structure is orthorhombic for x = 0.05, while it is tetragonal for x=0.10. With increasing δ, Tc increases and then reaches the maximum value, 20-25 K, at δ ≳ 0.05 for 0.05≤x≤0.10, independent of the crystal structure. The overall symmetry of the crystal structure is concluded not to be so responsible for the appearance of high-Tc superconductivity.",

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T1 - Relation between crystal structure and superconductivity in La2-xBixCuO4+δ with excess oxygen

AU - Kato, Masatsune

AU - Aoki, T.

AU - Chizawa, H.

AU - Koike, Yoji

AU - Ono, Y.

AU - Noji, Takashi

AU - Hikita, T.

AU - Saito, Y.

PY - 1994/1/1

Y1 - 1994/1/1

N2 - The relation between the crystal structure and superconductivity has been investigated for La2-xBixCuO4+δ with excess oxygen, in which the phase separation observed in La2CuO4+δ is suppressed. In the range of 0.03≲δ≲0.1 and T≲100 K, the crystal structure is orthorhombic for x = 0.05, while it is tetragonal for x=0.10. With increasing δ, Tc increases and then reaches the maximum value, 20-25 K, at δ ≳ 0.05 for 0.05≤x≤0.10, independent of the crystal structure. The overall symmetry of the crystal structure is concluded not to be so responsible for the appearance of high-Tc superconductivity.

AB - The relation between the crystal structure and superconductivity has been investigated for La2-xBixCuO4+δ with excess oxygen, in which the phase separation observed in La2CuO4+δ is suppressed. In the range of 0.03≲δ≲0.1 and T≲100 K, the crystal structure is orthorhombic for x = 0.05, while it is tetragonal for x=0.10. With increasing δ, Tc increases and then reaches the maximum value, 20-25 K, at δ ≳ 0.05 for 0.05≤x≤0.10, independent of the crystal structure. The overall symmetry of the crystal structure is concluded not to be so responsible for the appearance of high-Tc superconductivity.

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Relation between crystal structure and superconductivity in La_2-xBi_xCuO_4+δ with excess oxygen

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