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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(杨舸) ; Li, AG(李爱国) ; Dai, X ; Mao, HK ; Zhao, ZX |
| 刊名 | NATURE
 |
| 出版日期 | 2012 |
| 卷号 | 483期号:7387 |
| ISSN号 | 0028-0836 |
| 英文摘要 | 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. |
| 语种 | 英语 |
| WOS记录号 | WOS:000300877900045 |
| 公开日期 | 2013-12-05 |
| 源URL | [http://ir.sinap.ac.cn/handle/331007/13280]  |
| 专题 | 上海应用物理研究所_中科院上海应用物理研究所2011-2017年 |
| 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). |
| 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). |
| MLA | Sun, LL,et al."Re-emerging superconductivity at 48 kelvin in iron chalcogenides".NATURE 483.7387(2012). |
入库方式： OAI收割
来源：上海应用物理研究所
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