Complete substitution of Sr for Ca in Bi2Sr2+xCa1-xCu2 O8+δ

T. Di Luccio; V. Lukić; S. Oh; L. Maritato; J. N. Eckstein

Complete substitution of Sr for Ca in Bi₂Sr_2+xCa_1-xCu₂ O_8+δ

T. Di Luccio, V. Lukić, S. Oh, L. Maritato, J. N. Eckstein

Department of Physics

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4 Scopus citations

Abstract

We have systematically substituted Sr for Ca as spacer of the CuO₂ planes in Bi₂Sr_2+xCa_1-xCu₂ O_8+δ thin films deposited by molecular beam epitaxy, from x=0 (2212 phase) to x = 1 (2302 phase). From dc transport measurements we have found a decrease of T_c-zero from 88 K for x = 0 down to 55 K for x = 1. The remarkable result reported here is the presence of superconductivity when Ca is completely replaced by Sr. Comparison of structural and transport data shows that the enlargement of the unit cell due to the substitution has no dramatic effect on the onset of superconductivity. This result is compared to previous studies and existing results on bilayer systems.

Original language	English
Article number	092504
Pages (from-to)	925041-925044
Number of pages	4
Journal	Physical Review B - Condensed Matter and Materials Physics
Volume	67
Issue number	9
State	Published - 1 Mar 2003

Cite this

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title = "Complete substitution of Sr for Ca in Bi2Sr2+xCa1-xCu2 O8+δ",

abstract = "We have systematically substituted Sr for Ca as spacer of the CuO2 planes in Bi2Sr2+xCa1-xCu2 O8+δ thin films deposited by molecular beam epitaxy, from x=0 (2212 phase) to x = 1 (2302 phase). From dc transport measurements we have found a decrease of Tc-zero from 88 K for x = 0 down to 55 K for x = 1. The remarkable result reported here is the presence of superconductivity when Ca is completely replaced by Sr. Comparison of structural and transport data shows that the enlargement of the unit cell due to the substitution has no dramatic effect on the onset of superconductivity. This result is compared to previous studies and existing results on bilayer systems.",

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T1 - Complete substitution of Sr for Ca in Bi2Sr2+xCa1-xCu2 O8+δ

AU - Di Luccio, T.

AU - Lukić, V.

AU - Oh, S.

AU - Maritato, L.

AU - Eckstein, J. N.

PY - 2003/3/1

Y1 - 2003/3/1

N2 - We have systematically substituted Sr for Ca as spacer of the CuO2 planes in Bi2Sr2+xCa1-xCu2 O8+δ thin films deposited by molecular beam epitaxy, from x=0 (2212 phase) to x = 1 (2302 phase). From dc transport measurements we have found a decrease of Tc-zero from 88 K for x = 0 down to 55 K for x = 1. The remarkable result reported here is the presence of superconductivity when Ca is completely replaced by Sr. Comparison of structural and transport data shows that the enlargement of the unit cell due to the substitution has no dramatic effect on the onset of superconductivity. This result is compared to previous studies and existing results on bilayer systems.

AB - We have systematically substituted Sr for Ca as spacer of the CuO2 planes in Bi2Sr2+xCa1-xCu2 O8+δ thin films deposited by molecular beam epitaxy, from x=0 (2212 phase) to x = 1 (2302 phase). From dc transport measurements we have found a decrease of Tc-zero from 88 K for x = 0 down to 55 K for x = 1. The remarkable result reported here is the presence of superconductivity when Ca is completely replaced by Sr. Comparison of structural and transport data shows that the enlargement of the unit cell due to the substitution has no dramatic effect on the onset of superconductivity. This result is compared to previous studies and existing results on bilayer systems.

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ER -

Complete substitution of Sr for Ca in Bi₂Sr_2+xCa_1-xCu₂ O_8+δ

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