Interface-induced superconductivity and strain-dependent spin density waves in FeSe/SrTiO3 thin films
文献类型：期刊论文
| 作者 | Tan, SY ; Zhang, Y ; Xia, M ; Ye, ZR ; Chen, F ; Xie, X ; Peng, R ; Xu, DF ; Fan, Q ; Xu, HC ; Jiang, J ; Zhang, T ; Lai, XC ; Xiang, T ; Hu, JP ; Xie, BP ; Feng, DL |
| 刊名 | NATURE MATERIALS
 |
| 出版日期 | 2013 |
| 卷号 | 12期号:7页码:634 |
| ISSN号 | 1476-1122 |
| 通讯作者 | Feng, DL (reprint author), Fudan Univ, Dept Phys, State Key Lab Surface Phys, Shanghai 200433, Peoples R China. |
| 中文摘要 | The record superconducting transition temperature (T-c) for the iron-based high-temperature superconductors (Fe-HTS) has long been 56 K. Recently, in single-layer FeSe films grown on SrTiO3 substrates, indications of a new record of 65 K have been reported. Using in situ photoemission measurements, we substantiate the presence of spin density waves (SDWs) in FeSe films-a key ingredient of Fe-HTS that was missed in FeSe before-and we find that this weakens with increased thickness or reduced strain. We demonstrate that the superconductivity occurs when the electrons transferred from the oxygen-vacant substrate suppress the otherwise pronounced SDWs in single-layer FeSe. Beyond providing a comprehensive understanding of FeSe films and directions to further enhance its T-c, we map out the phase diagram of FeSe as a function of lattice constant, which contains all the essential physics of Fe-HTS. With the simplest structure, cleanest composition and single tuning parameter, monolayer FeSe is an ideal system for testing theories of Fe-HTS. |
| 资助信息 | National Science Foundation of China; National Basic Research Program of China (973 Program) [2012CB921400, 2011CB921802, 2011CBA00112, 2011CB309703, 91026016] |
| 语种 | 英语 |
| 公开日期 | 2014-01-16 |
| 源URL | [http://ir.iphy.ac.cn/handle/311004/57130]  |
| 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 | Tan, SY,Zhang, Y,Xia, M,et al. Interface-induced superconductivity and strain-dependent spin density waves in FeSe/SrTiO3 thin films[J]. NATURE MATERIALS,2013,12(7):634. |
| APA | Tan, SY.,Zhang, Y.,Xia, M.,Ye, ZR.,Chen, F.,...&Feng, DL.(2013).Interface-induced superconductivity and strain-dependent spin density waves in FeSe/SrTiO3 thin films.NATURE MATERIALS,12(7),634. |
| MLA | Tan, SY,et al."Interface-induced superconductivity and strain-dependent spin density waves in FeSe/SrTiO3 thin films".NATURE MATERIALS 12.7(2013):634. |
入库方式： OAI收割
来源：物理研究所
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