Transition from Three-Dimensional Anisotropic Spin Excitations to Two-Dimensional Spin Excitations by Electron Doping the FeAs-Based BaFe1.96Ni0.04As2 Superconductor
文献类型：期刊论文
| 作者 | Harriger, LW ; Schneidewind, A ; Li, SL ; Zhao, J ; Li, ZC ; Lu, W ; Dong, XL ; Zhou, F ; Zhao, ZX ; Hu, JP ; Dai, P |
| 刊名 | PHYSICAL REVIEW LETTERS
 |
| 出版日期 | 2009 |
| 卷号 | 103期号:8 |
| 关键词 | HIGH-TEMPERATURE SUPERCONDUCTIVITY PAIRING SYMMETRY |
| ISSN号 | 0031-9007 |
| 通讯作者 | Harriger, LW (reprint author), Univ Tennessee, Dept Phys & Astron, Knoxville, TN 37996 USA. |
| 中文摘要 | We use neutron scattering to study the effect of electron doping on the structural or magnetic order in BaFe2As2. In the undoped state, BaFe2As2 exhibits simultaneous structural and magnetic phase transitions below 143 K. Upon electron doping to form BaFe1.96Ni0.04As2, the system first displays the lattice distortion near similar to 97 K, and then orders antiferromagnetically at 91 K before developing weak superconductivity below similar to 15 K. The effect of electron doping is to reduce the c-axis exchange coupling in BaFe2As2 and induce quasi-two-dimensional (2D) spin excitations. These results suggest that the transition from 3D spin waves to quasi-2D spin excitations by electron doping is important for the separated structural and magnetic phase transitions in iron arsenides. |
| 收录类别 | SCI |
| 资助信息 | U.S. NSF [DMR-0756568]; U.S. DOE BES [DE-FG02-05ER46202]; U.S. DOE, Division of Scientific User Facilities; CAS; MOST of China; DFG [Sonderforschungsbereich 463] |
| 语种 | 英语 |
| 公开日期 | 2013-09-23 |
| 源URL | [http://ir.iphy.ac.cn/handle/311004/46035]  |
| 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 | Harriger, LW,Schneidewind, A,Li, SL,et al. Transition from Three-Dimensional Anisotropic Spin Excitations to Two-Dimensional Spin Excitations by Electron Doping the FeAs-Based BaFe1.96Ni0.04As2 Superconductor[J]. PHYSICAL REVIEW LETTERS,2009,103(8). |
| APA | Harriger, LW.,Schneidewind, A.,Li, SL.,Zhao, J.,Li, ZC.,...&Dai, P.(2009).Transition from Three-Dimensional Anisotropic Spin Excitations to Two-Dimensional Spin Excitations by Electron Doping the FeAs-Based BaFe1.96Ni0.04As2 Superconductor.PHYSICAL REVIEW LETTERS,103(8). |
| MLA | Harriger, LW,et al."Transition from Three-Dimensional Anisotropic Spin Excitations to Two-Dimensional Spin Excitations by Electron Doping the FeAs-Based BaFe1.96Ni0.04As2 Superconductor".PHYSICAL REVIEW LETTERS 103.8(2009). |
入库方式： OAI收割
来源：物理研究所
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