Re-emerging superconductivity at 48 kelvin in iron chalcogenides
文献类型：期刊论文
| 作者 | Sun, LL ; Chen, XJ ; Guo, J ; Gao, PW ; Huang, QZ ; Wang, HD ; Fang, MH ; Chen, XL ; Chen, GF ; Wu, Q ; Zhang, C ; Gu, DC ; Dong, XL ; Wang, L ; Yang, K ; Li, AG ; Dai, X ; Mao, HK ; Zhao, ZX |
| 刊名 | NATURE
 |
| 出版日期 | 2012 |
| 卷号 | 483期号:7387页码:67 |
| 关键词 | 43 K PRESSURE COMPOUND |
| ISSN号 | 0028-0836 |
| 通讯作者 | Zhao, ZX (reprint author), Chinese Acad Sci, Inst Phys, Beijing 100190, Peoples R China. |
| 中文摘要 | Pressure has an essential role in the production(1) and control(2,3) of superconductivity in iron-based superconductors. Substitution of a large cation by a smaller rare-earth ion to simulate the pressure effect has raised the superconducting transition temperature T-c to a record high of 55 K in these materials(4,5). In the same way as T-c exhibits a bell-shaped curve of dependence on chemical doping, pressure-tuned T-c typically drops monotonically after passing the optimal pressure(1-3). Here we report that in the superconducting iron chalcogenides, a second superconducting phase suddenly re-emerges above 11.5 GPa, after the T-c drops from the first maximum of 32 K at 1 GPa. The T-c of the re-emerging superconducting phase is considerably higher than the first maximum, reaching 48.0-48.7 K for Tl0.6Rb0.4Fe1.67Se2, K0.8Fe1.7Se2 and K0.8Fe1.78Se2. |
| 收录类别 | SCI |
| 资助信息 | NSCF; 973 projects; Chinese Academy of Sciences; EFree, an Energy Frontier Research Center; US Department of Energy, Office of Science, Office of Basic Energy Sciences (DOE-BES); CIW; CDAC; UNLV; LLNL through DOE-NNSA; NSF |
| 语种 | 英语 |
| 公开日期 | 2013-09-24 |
| 源URL | [http://ir.iphy.ac.cn/handle/311004/51979]  |
| 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, LL,Chen, XJ,Guo, J,et al. Re-emerging superconductivity at 48 kelvin in iron chalcogenides[J]. NATURE,2012,483(7387):67. |
| APA | Sun, LL.,Chen, XJ.,Guo, J.,Gao, PW.,Huang, QZ.,...&Zhao, ZX.(2012).Re-emerging superconductivity at 48 kelvin in iron chalcogenides.NATURE,483(7387),67. |
| MLA | Sun, LL,et al."Re-emerging superconductivity at 48 kelvin in iron chalcogenides".NATURE 483.7387(2012):67. |
入库方式： OAI收割
来源：物理研究所
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