Exploring FeSe-based superconductors by liquid ammonia method
文献类型：期刊论文
| 作者 | Ying, TP ; Wang, G ; Jin, SF ; Shen, SJ ; Zhang, H ; Zhou, TT ; Lai, XF ; Wang, WY ; Chen, XL |
| 刊名 | CHINESE PHYSICS B
 |
| 出版日期 | 2013 |
| 卷号 | 22期号:8 |
| 关键词 | superconductivity iron-based superconductor liquid ammonia critical temperature |
| ISSN号 | 1674-1056 |
| 通讯作者 | Chen, XL (reprint author), Chinese Acad Sci, Beijing Natl Lab Condensed Matter Phys, Inst Phys, Res & Dev Ctr Funct Crystals, Beijing 100190, Peoples R China. |
| 中文摘要 | Our recent progress on the preparation of a series of new FeSe-based superconductors and the clarification of SC phases in potassium-intercalated iron selenides are reviewed here. By the liquid ammonia method, metals Li, Na, Ca, Sr, Ba, Eu, and Yb are intercalated in between FeSe layers and form superconductors with transition temperatures of 30 K similar to 46 K, which cannot be obtained by high-temperature routes. In the potassium-intercalated iron selenides, we demonstrate that at least two SC phases exist, KxFe2Se2(NH3)(y) (x approximate to 0.3 and 0.6), determined mainly by the concentration of potassium. NH3 has little, if any, effect on superconductivity, but plays an important role in stabilizing the structures. All these results provide a new starting point for studying the intrinsic properties of this family of superconductors, especially for their particular electronic structures. |
| 资助信息 | National Natural Science Foundation of China [90922037, 51072226, 51202286]; Chinese Academy of Sciences; International Center for Diffraction Data (ICDD); Beijing Nova Program, China [2011096] |
| 语种 | 英语 |
| 公开日期 | 2014-01-16 |
| 源URL | [http://ir.iphy.ac.cn/handle/311004/56992]  |
| 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,Wang, G,Jin, SF,et al. Exploring FeSe-based superconductors by liquid ammonia method[J]. CHINESE PHYSICS B,2013,22(8). |
| APA | Ying, TP.,Wang, G.,Jin, SF.,Shen, SJ.,Zhang, H.,...&Chen, XL.(2013).Exploring FeSe-based superconductors by liquid ammonia method.CHINESE PHYSICS B,22(8). |
| MLA | Ying, TP,et al."Exploring FeSe-based superconductors by liquid ammonia method".CHINESE PHYSICS B 22.8(2013). |
入库方式： OAI收割
来源：物理研究所
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