| Superconducting Transition Temperature in YBa2Cu4O8/La2/3 Ca1/3 MnO3 / YBa2 Cu4O8 Heterostructure |
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| 作者姓名： | 赵昆 黄康权 |
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| 作者单位： | [1]Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing 100080, China [2]International Center for Materials Physics, Chinese Academy of Sciences, Shenyang 110016, China [3]Department of Physics, Chinese University ofHongKong, Hong Kong, China |
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| 基金项目： | Project supported by Hong Kong Research Grant Council, and China Postdoctoral Science Foundation |
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| 摘 要： | YBa2Cu4O8/La2/3 Ca1/3 MnO3/YBa2Cu4O8 （ Y-124/LCMO/Y- 124） heterostructure was prepared by facing-target sputtering technique. The oscillatory superconducting transition temperature was observed when the thickness of LCMO d L is larger than critical thickness d L^CR. The metal-insulator transition temperature can only be detected at d L 〉 d L^CR. The dependence on the spacer layer in LCMO/Y-124 systems suggests strongly the interplay of ferromagnetic and superconducting couplings.
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| 关 键 词： | YBCO 超导转变温度 异质结构 巨磁阻抗材料 层间耦合 稀土 |
| 文章编号： | 1002-0721（2006）01-0081-04 |
| 收稿时间： | 2005-04-18 |
| 修稿时间： | 2005-06-23 |
Superconducting Transition Temperature in YBa2 Cu4O8/La2/3Ca1/3 MnO3/YBa2Cu4O8 Heterostructure |
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| Kun ,Hongkuen Wong.Superconducting Transition Temperature in YBa2Cu4O8/La2/3 Ca1/3 MnO3 / YBa2 Cu4O8 Heterostructure[J].Journal of Rare Earths,2006,24(1):81-84. |
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| Authors: | Kun Hongkuen Wong |
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| Affiliation: | aBeijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing 100080, China;bInternational Center for Materials Physics, Chinese Academy of Sciences, Shenyang 110016, China;cDepartment of Physics, Chinese University of Hong Kong, Hong Kong, China |
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| Abstract: | YBa2Cu4O8/La2/3Ca1/3MnO3/YBa2Cu4O8 (Y-124/LCMO/Y-124) heterostructure was prepared by facing-target sputtering technique. The oscillatory superconducting transition temperature was observed when the thickness of LCMO dL is larger than critical thickness dLCR. The metal-insulator transition temperature can only be detected at dL＞dLCR. The dependence on the spacer layer in LCMO/Y-124 systems suggests strongly the interplay of ferromagnetic and superconducting couplings. |
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| Keywords: | high-TC films colossal magnetoresistance heterostructure interlayer coupling rare earths |
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