Suppression of superconductivity by lanthanum substitution in the Bi4Ca3Sr3Cu4Oy system

N. Ikeda; K. Kohn; E. V. Sampathkumaran; R. Vijayaraghavan

doi:10.1016/0038-1098(88)90243-8

Suppression of superconductivity by lanthanum substitution in the Bi₄Ca₃Sr₃Cu₄O_y system

N. Ikeda, K. Kohn, E. V. Sampathkumaran, R. Vijayaraghavan

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

11 Citations (Scopus)

Abstract

The influence of partial substitution of La for Bi on the superconductivity of Bi₄Ca₃Sr₃Cu₄O_y (y = undetermined) is investigated by DC resistance (R) and AC susceptibility (χ) measurements and compared with the behaviour in the corresponding Eu and Gd substituted specimens. The results suggest that La suppresses superconductivity much faster than Eu and Gd substituents. We propose that the depression of superconductivity by La is not simply due to disorder, but due to the presence of extended 4f electrons.

Original language	English
Pages (from-to)	51-55
Number of pages	5
Journal	Solid State Communications
Volume	68
Issue number	1
DOIs	https://doi.org/10.1016/0038-1098(88)90243-8
Publication status	Published - Oct 1988
Externally published	Yes

ASJC Scopus subject areas

Chemistry(all)
Condensed Matter Physics
Materials Chemistry

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abstract = "The influence of partial substitution of La for Bi on the superconductivity of Bi4Ca3Sr3Cu4Oy (y = undetermined) is investigated by DC resistance (R) and AC susceptibility (χ) measurements and compared with the behaviour in the corresponding Eu and Gd substituted specimens. The results suggest that La suppresses superconductivity much faster than Eu and Gd substituents. We propose that the depression of superconductivity by La is not simply due to disorder, but due to the presence of extended 4f electrons.",

author = "N. Ikeda and K. Kohn and Sampathkumaran, {E. V.} and R. Vijayaraghavan",

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AU - Ikeda, N.

AU - Kohn, K.

AU - Sampathkumaran, E. V.

AU - Vijayaraghavan, R.

PY - 1988/10

Y1 - 1988/10

N2 - The influence of partial substitution of La for Bi on the superconductivity of Bi4Ca3Sr3Cu4Oy (y = undetermined) is investigated by DC resistance (R) and AC susceptibility (χ) measurements and compared with the behaviour in the corresponding Eu and Gd substituted specimens. The results suggest that La suppresses superconductivity much faster than Eu and Gd substituents. We propose that the depression of superconductivity by La is not simply due to disorder, but due to the presence of extended 4f electrons.

AB - The influence of partial substitution of La for Bi on the superconductivity of Bi4Ca3Sr3Cu4Oy (y = undetermined) is investigated by DC resistance (R) and AC susceptibility (χ) measurements and compared with the behaviour in the corresponding Eu and Gd substituted specimens. The results suggest that La suppresses superconductivity much faster than Eu and Gd substituents. We propose that the depression of superconductivity by La is not simply due to disorder, but due to the presence of extended 4f electrons.

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Suppression of superconductivity by lanthanum substitution in the Bi₄Ca₃Sr₃Cu₄O_y system

Abstract

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