An anomalous tail effect in the resistivity transition and weak-link behavior of superconducting NdFeAsO0.88F0.12
文献类型：期刊论文
| 作者 | Sun, Y ; Ding, Y ; Zhuang, JC ; Cui, LJ ; Yuan, XP ; Shi, ZX ; Ren, ZA |
| 刊名 | SUPERCONDUCTOR SCIENCE & TECHNOLOGY
 |
| 出版日期 | 2011 |
| 卷号 | 24期号:8 |
| ISSN号 | 0953-2048 |
| 通讯作者 | Sun, Y: Southeast Univ, Dept Phys, Nanjing 211189, Peoples R China. |
| 中文摘要 | The temperature dependent resistivity of the iron-based superconductor NdFeAsO0.88F0.12 was measured under different applied fields and excitation currents. The Arrhenius plot shows an anomalous tail effect, which contains two obvious stages of decreasing resistivity. The first is caused by the normal superconducting transition, and the second is supposed to be related to the weak link between the grains. A model for the resistivity decrease related to the weak-link behavior is proposed, which is based on the Josephson junctions formed by the impurities in grain boundaries like FeAs, Sm2O3 and cracks together with the adjacent grains. These Josephson junctions can be easily broken by the applied fields and the excitation currents, leading to an anomalous resistivity tail in many polycrystalline iron-based superconductors. The calculated drop in resistivity agrees well with the experimental data, which indicates the correctness of the explanation for the obtained anomalous tail effect. |
| 收录类别 | SCI |
| 资助信息 | Natural Science Foundation of China; Ministry of Science and Technology of China [2011CBA00100]; National Science Foundation of Jiangsu Province of China [BK2010421]; Important Project [2011seuzd09]; Scientific Research Foundation of Graduate School of Southeast University [YBJJ1104] |
| 语种 | 英语 |
| 公开日期 | 2013-09-17 |
| 源URL | [http://ir.iphy.ac.cn/handle/311004/33623]  |
| 专题 | 物理研究所_物理所公开发表论文_物理所公开发表论文_期刊论文 |
| 推荐引用方式 GB/T 7714 | Sun, Y,Ding, Y,Zhuang, JC,et al. An anomalous tail effect in the resistivity transition and weak-link behavior of superconducting NdFeAsO0.88F0.12[J]. SUPERCONDUCTOR SCIENCE & TECHNOLOGY,2011,24(8). |
| APA | Sun, Y.,Ding, Y.,Zhuang, JC.,Cui, LJ.,Yuan, XP.,...&Ren, ZA.(2011).An anomalous tail effect in the resistivity transition and weak-link behavior of superconducting NdFeAsO0.88F0.12.SUPERCONDUCTOR SCIENCE & TECHNOLOGY,24(8). |
| MLA | Sun, Y,et al."An anomalous tail effect in the resistivity transition and weak-link behavior of superconducting NdFeAsO0.88F0.12".SUPERCONDUCTOR SCIENCE & TECHNOLOGY 24.8(2011). |
入库方式： OAI收割
来源：物理研究所
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