Observation of superconductivity at 30 similar to 46K in A(x)Fe(2)Se(2) (A=Li, Na, Ba, Sr, Ca, Yb, and Eu)
文献类型：期刊论文
| 作者 | Ying, TP ; Chen, XL ; Wang, G ; Jin, SF ; Zhou, TT ; Lai, XF ; Zhang, H ; Wang, WY |
| 刊名 | SCIENTIFIC REPORTS
 |
| 出版日期 | 2012 |
| 卷号 | 2 |
| 关键词 | MOLYBDENUM-DISULFIDE PHASE-SEPARATION METAL INTERCALATION AMMONIA ORDER C-60 |
| ISSN号 | 2045-2322 |
| 通讯作者 | Chen, XL (reprint author), Chinese Acad Sci, Res & Dev Ctr Funct Crystals, Beijing Natl Lab Condensed Matter Phys, Inst Phys, Beijing 100190, Peoples R China. |
| 中文摘要 | New iron selenide superconductors by intercalating smaller-sized alkali metals (Li, Na) and alkaline earths using high-temperature routes have been pursued ever since the discovery of superconductivity at about 30 K in KFe2Se2, but all have failed so far. Here we demonstrate that a series of superconductors with enhanced T-c=30 similar to 46 K can be obtained by intercalating metals, Li, Na, Ba, Sr, Ca, Yb, and Eu in between FeSe layers by the ammonothermal method at room temperature. Analysis on their powder X-ray diffraction patterns reveals that all the main phases can be indexed based on body-centered tetragonal lattices with a similar to 3.755-3.831 angstrom while c similar to 15.99-20.54 angstrom. Resistivities show the corresponding sharp transitions at 45 K and 39 K for NaFe2Se2 and Ba0.8Fe2Se2, respectively, confirming their bulk superconductivity. These findings provide a new starting point for studying the properties of these superconductors and an effective synthetic route for the exploration of new superconductors as well. |
| 收录类别 | SCI |
| 资助信息 | National Science Foundation of China [90922037, 51072226]; Chinese Academy of Sciences |
| 语种 | 英语 |
| 公开日期 | 2013-09-24 |
| 源URL | [http://ir.iphy.ac.cn/handle/311004/50180]  |
| 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 | Ying, TP,Chen, XL,Wang, G,et al. Observation of superconductivity at 30 similar to 46K in A(x)Fe(2)Se(2) (A=Li, Na, Ba, Sr, Ca, Yb, and Eu)[J]. SCIENTIFIC REPORTS,2012,2. |
| APA | Ying, TP.,Chen, XL.,Wang, G.,Jin, SF.,Zhou, TT.,...&Wang, WY.(2012).Observation of superconductivity at 30 similar to 46K in A(x)Fe(2)Se(2) (A=Li, Na, Ba, Sr, Ca, Yb, and Eu).SCIENTIFIC REPORTS,2. |
| MLA | Ying, TP,et al."Observation of superconductivity at 30 similar to 46K in A(x)Fe(2)Se(2) (A=Li, Na, Ba, Sr, Ca, Yb, and Eu)".SCIENTIFIC REPORTS 2(2012). |
入库方式： OAI收割
来源：物理研究所
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