Dichotomy of the electronic structure and superconductivity between single-layer and double-layer FeSe/SrTiO3 films
文献类型：期刊论文
| 作者 | Liu, X ; Liu, DF ; Zhang, WH ; He, JF ; Zhao, L ; He, SL ; Mou, DX ; Li, FS ; Tang, CJ ; Li, Z ; Wang, LL ; Peng, YY ; Liu, Y ; Chen, CY ; Yu, L ; Liu, GD ; Dong, XL ; Zhang, J ; Chen, CT ; Xu, ZY ; Chen, X ; Ma, XC ; Xue, QK ; Zhou, XJ |
| 刊名 | NATURE COMMUNICATIONS
 |
| 出版日期 | 2014 |
| 卷号 | 5 |
| ISSN号 | 2041-1723 |
| 通讯作者 | Zhou, XJ (reprint author), Chinese Acad Sci, Inst Phys, Beijing Natl Lab Condensed Matter Phys, Natl Lab Superconduct, Beijing 100190, Peoples R China. |
| 中文摘要 | The latest discovery of possible high-temperature superconductivity in the single-layer FeSe film grown on a SrTiO3 substrate has generated much attention. Initial work found that, while the single-layer FeSe/SrTiO3 film exhibits a clear signature of superconductivity, the double-layer film shows an insulating behaviour. Such a marked layer-dependent difference is surprising and the underlying origin remains unclear. Here we report a comparative angle-resolved photoemission study between the single-layer and double-layer FeSe/SrTiO3 films annealed in vacuum. We find that, different from the single-layer FeSe/SrTiO3 film, the double-layer FeSe/SrTiO3 film is hard to get doped and remains in the semiconducting/insulating state under an extensive annealing condition. Such a behaviour originates from the much reduced doping efficiency in the bottom FeSe layer of the double-layer FeSe/SrTiO3 film from the FeSe-SrTiO3 interface. These observations provide key insights in understanding the doping mechanism and the origin of superconductivity in the FeSe/SrTiO3 films. |
| 资助信息 | NSFC [11190022, 11334010, 11374335]; MOST of China (973 program) [2011CB921703, 2011CBA00110]; Strategic Priority Research Program (B) of CAS [XDB07020300]; MOST of China [2009CB929400, 2012CB921702] |
| 语种 | 英语 |
| 公开日期 | 2015-04-14 |
| 源URL | [http://ir.iphy.ac.cn/handle/311004/59380]  |
| 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 | Liu, X,Liu, DF,Zhang, WH,et al. Dichotomy of the electronic structure and superconductivity between single-layer and double-layer FeSe/SrTiO3 films[J]. NATURE COMMUNICATIONS,2014,5. |
| APA | Liu, X.,Liu, DF.,Zhang, WH.,He, JF.,Zhao, L.,...&Zhou, XJ.(2014).Dichotomy of the electronic structure and superconductivity between single-layer and double-layer FeSe/SrTiO3 films.NATURE COMMUNICATIONS,5. |
| MLA | Liu, X,et al."Dichotomy of the electronic structure and superconductivity between single-layer and double-layer FeSe/SrTiO3 films".NATURE COMMUNICATIONS 5(2014). |
入库方式： OAI收割
来源：物理研究所
浏览0
下载0
收藏0
其他版本
除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。