Properties of superconductivity for decoupled ferromagnet/superconductor trilayers and multilayers in Fe/Nb system

S. Y. Huang; S. F. Lee; Jun Jih Liang; C. Y. Yu; K. L. You; T. W. Chiang; Shih-ying Hsu; Y. D. Yao

doi:10.1016/j.jmmm.2006.01.185

Properties of superconductivity for decoupled ferromagnet/superconductor trilayers and multilayers in Fe/Nb system

S. Y. Huang^*, S. F. Lee, Jun Jih Liang, C. Y. Yu, K. L. You, T. W. Chiang, Shih-ying Hsu, Y. D. Yao

^*此作品的通信作者

電子物理學系

研究成果: Article › 同行評審

6 引文斯高帕斯（Scopus）

摘要

The transition temperature T_c and upper critical field H_c2 of sputtered Fe/Nb trilayers and multilayers have been determined by measurement of electrical resistivity. For a fixed Fe layer thickness, T_c decreases with decreasing Nb thickness up to a critical thickness d_Nb^crit ≈ 34 nm below which superconductivity vanishes. When the superconducting layers are thin ( d_Nb < 140 nm ) and decoupled by pair breaking in the ferromagnetic layers, the parallel critical field exhibits nonlinear temperature dependence, revealing a change in the superconducting dimensionality. The strong decrease of T_c with decreasing Nb thickness as well as the temperature dependence of H_c2 can be well described by theoretical model.

原文	English
頁（從 - 到）	e81-e83
期刊	Journal of Magnetism and Magnetic Materials
卷	304
發行號	1
DOIs	https://doi.org/10.1016/j.jmmm.2006.01.185
出版狀態	Published - 9月 2006

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10.1016/j.jmmm.2006.01.185

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title = "Properties of superconductivity for decoupled ferromagnet/superconductor trilayers and multilayers in Fe/Nb system",

abstract = "The transition temperature Tc and upper critical field Hc2 of sputtered Fe/Nb trilayers and multilayers have been determined by measurement of electrical resistivity. For a fixed Fe layer thickness, Tc decreases with decreasing Nb thickness up to a critical thickness dNbcrit ≈ 34 nm below which superconductivity vanishes. When the superconducting layers are thin ( dNb < 140 nm ) and decoupled by pair breaking in the ferromagnetic layers, the parallel critical field exhibits nonlinear temperature dependence, revealing a change in the superconducting dimensionality. The strong decrease of Tc with decreasing Nb thickness as well as the temperature dependence of Hc2 can be well described by theoretical model.",

keywords = "Critical thickness, Dimensional crossover, Proximity effect",

author = "Huang, {S. Y.} and Lee, {S. F.} and Liang, {Jun Jih} and Yu, {C. Y.} and You, {K. L.} and Chiang, {T. W.} and Shih-ying Hsu and Yao, {Y. D.}",

year = "2006",

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doi = "10.1016/j.jmmm.2006.01.185",

language = "English",

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journal = "Journal of Magnetism and Magnetic Materials",

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TY - JOUR

T1 - Properties of superconductivity for decoupled ferromagnet/superconductor trilayers and multilayers in Fe/Nb system

AU - Huang, S. Y.

AU - Lee, S. F.

AU - Liang, Jun Jih

AU - Yu, C. Y.

AU - You, K. L.

AU - Chiang, T. W.

AU - Hsu, Shih-ying

AU - Yao, Y. D.

PY - 2006/9

Y1 - 2006/9

N2 - The transition temperature Tc and upper critical field Hc2 of sputtered Fe/Nb trilayers and multilayers have been determined by measurement of electrical resistivity. For a fixed Fe layer thickness, Tc decreases with decreasing Nb thickness up to a critical thickness dNbcrit ≈ 34 nm below which superconductivity vanishes. When the superconducting layers are thin ( dNb < 140 nm ) and decoupled by pair breaking in the ferromagnetic layers, the parallel critical field exhibits nonlinear temperature dependence, revealing a change in the superconducting dimensionality. The strong decrease of Tc with decreasing Nb thickness as well as the temperature dependence of Hc2 can be well described by theoretical model.

AB - The transition temperature Tc and upper critical field Hc2 of sputtered Fe/Nb trilayers and multilayers have been determined by measurement of electrical resistivity. For a fixed Fe layer thickness, Tc decreases with decreasing Nb thickness up to a critical thickness dNbcrit ≈ 34 nm below which superconductivity vanishes. When the superconducting layers are thin ( dNb < 140 nm ) and decoupled by pair breaking in the ferromagnetic layers, the parallel critical field exhibits nonlinear temperature dependence, revealing a change in the superconducting dimensionality. The strong decrease of Tc with decreasing Nb thickness as well as the temperature dependence of Hc2 can be well described by theoretical model.

KW - Critical thickness

KW - Dimensional crossover

KW - Proximity effect

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U2 - 10.1016/j.jmmm.2006.01.185

DO - 10.1016/j.jmmm.2006.01.185

M3 - Article

AN - SCOPUS:33646880235

SN - 0304-8853

VL - 304

SP - e81-e83

JO - Journal of Magnetism and Magnetic Materials

JF - Journal of Magnetism and Magnetic Materials

IS - 1

ER -

Properties of superconductivity for decoupled ferromagnet/superconductor trilayers and multilayers in Fe/Nb system

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