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| YBa2Cu4O8/La2/3Ca1/3MnO3/YBa2Cu4O8异质结中的超导转变温度 | |
| 引用本文： | 梁宝龙,张丽,赵昆,黄康权.YBa2Cu4O8/La2/3Ca1/3MnO3/YBa2Cu4O8异质结中的超导转变温度[J].中国稀土学报,2005,23(5):617-620. |
| 作者姓名： | 梁宝龙 张丽 赵昆 黄康权 |
| 作者单位： | 1. 聊城大学物理系,山东,聊城,252059 2. 聊城大学物理系,山东,聊城,252059;北京凝聚态物理国家实验室,北京,100080;中国科学院国际材料物理中心,辽宁,沈阳,110016 3. 香港中文大学物理系,香港 |
| 基金项目： | 山东省教育厅科技攻关计划（03A05）,香港研究资助局基金,中国博士后科学基金资助 |
| 摘 要： | 采用对靶溅射技术制备了YBa2Cu4O8/La2/3Ca1/3MnO3/YBa2Cu4O8（Y-124/LCMO/Y-124）异质结, 研究了超导转变温度（TC）随LCMO层厚度（dL）的振荡行为. 当dL＞dLCR时, TC-dL曲线表现出清晰的非单调行为, 而金属-绝缘体转变温度（TMI）仅当dL＞dLCR时才能观测到. Y-124/LCMO/Y-124系统中所存在的这种对中间层的依赖关系, 显示了铁磁和超导耦合间强烈的相互作用. |
| 关 键 词： | 高温超导薄膜 庞磁电阻 异质结 层间耦合 稀土 |
| 文章编号： | 1000-4343（2005）05-0617-04 |
| 收稿时间： | 04 18 2005 12:00AM |
| 修稿时间： | 2005-04-182005-06-23 |
Superconducting Transition Temperature in YBa2Cu4O8/La2/3Ca1/3MnO3/YBa2Cu4O8 Heterostructure |
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| Liang Baolong,Zhang Li,Zhao Kun,Wong Hongkuen.Superconducting Transition Temperature in YBa2Cu4O8/La2/3Ca1/3MnO3/YBa2Cu4O8 Heterostructure[J].Journal of the Chinese Rare Earth Society,2005,23(5):617-620. | |
| Authors: | Liang Baolong Zhang Li Zhao Kun Wong Hongkuen |
| Institution: | 1. Department of Physics, Liaocheng University, Liaocheng 252059, China; 2. Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing 100080, China; 3. International Center for Materials Physics, Chinese Academy of Sciences, Shenyang 110016, China ; 4. Department of Physics, Chinese University of Hong Kong , Hong Kong , China |
| Abstract: | YBa_2Cu_4O_8/La_(2/3)Ca_(1/3)MnO_3/YBa_2Cu_4O_8(Y-124/LCMO/Y-124) heterostructure was prepared by facing-target sputtering technique.The oscillatory superconducting transition temperature(T_C) was observed when the thickness of LCMO d_L is larger than the critical thickness d_L~(CR).The metal-insulator transition temperature(T_(MI)) 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. |
| Keywords: | high-Tc films colossal magnetoresistance heterostructure interlayer coupling rare earths |
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