Current-voltage Characteristics of NdFeAsO0.85F0.15 and NdFeASO(0.85) Superconductors
文献类型：期刊论文
| 作者 | Liu, Y ; Chai, YS ; Kim, HJ ; Stewart, GR ; Kim, KH ; Ren, ZA ; Zhao, ZX |
| 刊名 | JOURNAL OF THE KOREAN PHYSICAL SOCIETY
 |
| 出版日期 | 2009 |
| 卷号 | 55期号:2页码:L383 |
| 关键词 | HIGH-TEMPERATURE SUPERCONDUCTORS VORTEX-GLASS SUPERCONDUCTIVITY BA-CU-O TRANSITION PHASE YBA2CU3O7-DELTA IRREVERSIBILITY UNIVERSALITY CRYSTAL |
| ISSN号 | 0374-4884 |
| 通讯作者 | Liu, Y: Seoul Natl Univ, Frontier Phys Res Div, Dept Phys & Astron, Seoul 151747, South Korea. |
| 中文摘要 | The vortex phase diagrams of NdFeAsO0.85F0.15 and NdFeAsO0.85 superconductors are determined from an analysis of resistivity and current-voltage (I-V) measurements in magnetic fields tip to 9 T. A vortex glass to liquid transition can be identified only in the oxygen-deficient NdFeAsO0.85, for which the I-V curves call be well scaled onto liquid and glass branches consistent with the vortex glass theory. With increasing magnetic field, the activation energy, U-0, deduced from the Arrhenius plots of the resistivity based oil the thermally-activated flux-flow model decays more quickly for NdFeAsO0.85F0.15 than for NdFeAsO0.85. Moreover, the irreversibility field, H-irr, of NdFeAsO0.85 increases more rapidly than that of NdFeAsO0.85F0.15 with decreasing temperature. These observations imply strong vortex pinning effects in the oxygen-deficient NdFeAsO0.85, presumably caused by enhanced defects and disorders. We infer that the observation of a vortex glass to liquid transition in NdFeAsO0.85 may be also related to the enhanced defects and disorder in the specimen. |
| 收录类别 | SCI |
| 资助信息 | National Research Lab [M10600000238]; MEST [K20702020014-07E0200-01410]; Korea Research Foundation [KRF-2008-314-C00101]; Seoul RBD; US Department of Energy [DE-FG02-86ER45268] |
| 语种 | 英语 |
| 公开日期 | 2013-09-17 |
| 源URL | [http://ir.iphy.ac.cn/handle/311004/35595]  |
| 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 | Liu, Y,Chai, YS,Kim, HJ,et al. Current-voltage Characteristics of NdFeAsO0.85F0.15 and NdFeASO(0.85) Superconductors[J]. JOURNAL OF THE KOREAN PHYSICAL SOCIETY,2009,55(2):L383. |
| APA | Liu, Y.,Chai, YS.,Kim, HJ.,Stewart, GR.,Kim, KH.,...&Zhao, ZX.(2009).Current-voltage Characteristics of NdFeAsO0.85F0.15 and NdFeASO(0.85) Superconductors.JOURNAL OF THE KOREAN PHYSICAL SOCIETY,55(2),L383. |
| MLA | Liu, Y,et al."Current-voltage Characteristics of NdFeAsO0.85F0.15 and NdFeASO(0.85) Superconductors".JOURNAL OF THE KOREAN PHYSICAL SOCIETY 55.2(2009):L383. |
入库方式： OAI收割
来源：物理研究所
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