Anisotropic spin fluctuations and multiple superconducting gaps in hole-doped Ba0.72K0.28Fe2As2: NMR in a single crystal
文献类型：期刊论文
| 作者 | Matano, K ; Li, Z ; Sun, GL ; Sun, DL ; Lin, CT ; Ichioka, M ; Zheng, GQ |
| 刊名 | EPL
 |
| 出版日期 | 2009 |
| 卷号 | 87期号:2 |
| 关键词 | DENSITY-WAVE YBA2CU3O7 COMPOUND STATE NQR |
| ISSN号 | 0295-5075 |
| 通讯作者 | Matano, K: Okayama Univ, Dept Phys, Okayama 7008530, Japan. |
| 中文摘要 | We report the As-75-NMR study on a single crystal of the hole-doped iron-pnictide superconductor Ba0.72K0.28Fe2As2 (T-c = 31.5 K). We find that the Fe antiferromagnetic spin fluctuations are anisotropic and are weaker compared to underdoped copper-oxides or cobalt-oxide superconductors. The spin lattice relaxation rate 1/T-1 decreases below T-c with no coherence peak and shows a stepwise variation at low temperatures, which is indicative of multiple superconducting gaps, as in the electron-doped Pr(La) FeAsO1-xFx. Furthermore, no evidence was obtained for a microscopic coexistence of a long-range magnetic order and superconductivity. Copyright (C) EPLA, 2009 |
| 收录类别 | SCI |
| 资助信息 | MEXT; JSPS [20244058, 17072005] |
| 语种 | 英语 |
| 公开日期 | 2013-09-17 |
| 源URL | [http://ir.iphy.ac.cn/handle/311004/33794]  |
| 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 | Matano, K,Li, Z,Sun, GL,et al. Anisotropic spin fluctuations and multiple superconducting gaps in hole-doped Ba0.72K0.28Fe2As2: NMR in a single crystal[J]. EPL,2009,87(2). |
| APA | Matano, K.,Li, Z.,Sun, GL.,Sun, DL.,Lin, CT.,...&Zheng, GQ.(2009).Anisotropic spin fluctuations and multiple superconducting gaps in hole-doped Ba0.72K0.28Fe2As2: NMR in a single crystal.EPL,87(2). |
| MLA | Matano, K,et al."Anisotropic spin fluctuations and multiple superconducting gaps in hole-doped Ba0.72K0.28Fe2As2: NMR in a single crystal".EPL 87.2(2009). |
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来源：物理研究所
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