Physcial Properties of SuperconductorNo Access

ANISOTROPY OF THE ELECTRON-DOPED INFINITE-LAYER SUPERCONDUCTOR Sr_0.9La_0.1CuO₂

National Creative Research Initiative Center for Superconductivity and Department of Physics, Pohang University of Science and Technology, Pohang, Kyungbuk 790-784, Republic of Korea

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MIN-SEOK PARK

National Creative Research Initiative Center for Superconductivity and Department of Physics, Pohang University of Science and Technology, Pohang, Kyungbuk 790-784, Republic of Korea

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C. U. JUNG

National Creative Research Initiative Center for Superconductivity and Department of Physics, Pohang University of Science and Technology, Pohang, Kyungbuk 790-784, Republic of Korea

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SUNG-IK LEE

National Creative Research Initiative Center for Superconductivity and Department of Physics, Pohang University of Science and Technology, Pohang, Kyungbuk 790-784, Republic of Korea

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, and

MUN-SEOG KIM

Division of Electromagnetic Metrology Korea Research Institute of Standards and Science, P. O. BOX 102, Yuseong, Daejeon 305-600, Republic of Korea

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https://doi.org/10.1142/S0217979205028244Cited by:0 (Source: Crossref)

Abstract

Anisotropy of a c-axis aligned Sr_0.9La_0.1CuO₂ infinite-layer superconductor was studied by measuring the magnetization in different temperature (M(T)) and angle (M(θ)). The M(θ) and the critical temperature as a function of the angle (T_c2(θ)) deduced from M(T) was well described by the anisotropic Ginzburg-Landua theory with a moderate anisotropy value γ≈9. This low value, which is comparable to that of YBa₂Cu₃O_7-δ implied strong interlayer coupling between CuO₂ planes. In this compound, the strong interlayer coupling was thought to solely result from the crystal structure without charge reservoir blocks.

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