Inelastic Neutron-Scattering Measurements of a Three-Dimensional Spin Resonance in the FeAs-Based BaFe1.9Ni0.1As2 Superconductor
文献类型:期刊论文
作者 | Chi, SX ; Schneidewind, A ; Zhao, J ; Harriger, LW ; Li, LJ ; Luo, YK ; Cao, GH ; Xu, ZA ; Loewenhaupt, M ; Hu, JP ; Dai, PC |
刊名 | PHYSICAL REVIEW LETTERS
![]() |
出版日期 | 2009 |
卷号 | 102期号:10 |
关键词 | UPD2AL3 |
ISSN号 | 0031-9007 |
通讯作者 | Chi, SX (reprint author), Univ Tennessee, Dept Phys & Astron, Knoxville, TN 37996 USA. |
中文摘要 | We use inelastic neutron scattering to study magnetic excitations of the FeAs-based superconductor BaFe1.9Ni0.1As2 above and below its T-c (=20 K). In addition to gradually open a spin gap at the in-plane antiferromagnetic ordering wave vector (1, 0, 0), the effect of superconductivity is to form a three-dimensional resonance with clear dispersion along the c axis. The intensity of the resonance develops like a superconducting order parameter, and the mode occurs at distinctively different energies at (1, 0, 0) and (1, 0, 1). If the resonance energy is associated with the superconducting gap energy Delta, then Delta is dependent on the wave vector transfers along the c axis. These results suggest that one must be careful in interpreting the superconducting gap energies obtained by surface sensitive probes such as scanning tunneling microscopy and angle resolved photoemission. |
收录类别 | SCI |
资助信息 | U.S. NSF [DMR-0756568]; U. S. DOE [DE-FG02-05ER4620]; NSF of China; DFG; TU Dresden; FRM II |
语种 | 英语 |
公开日期 | 2014-02-20 |
源URL | [http://ir.iphy.ac.cn/handle/311004/57843] ![]() |
专题 | 物理研究所_所内人员在其他单位发表论文题录信息_所内人员在其他单位发表论文题录信息_期刊论文 |
推荐引用方式 GB/T 7714 | Chi, SX,Schneidewind, A,Zhao, J,et al. Inelastic Neutron-Scattering Measurements of a Three-Dimensional Spin Resonance in the FeAs-Based BaFe1.9Ni0.1As2 Superconductor[J]. PHYSICAL REVIEW LETTERS,2009,102(10). |
APA | Chi, SX.,Schneidewind, A.,Zhao, J.,Harriger, LW.,Li, LJ.,...&Dai, PC.(2009).Inelastic Neutron-Scattering Measurements of a Three-Dimensional Spin Resonance in the FeAs-Based BaFe1.9Ni0.1As2 Superconductor.PHYSICAL REVIEW LETTERS,102(10). |
MLA | Chi, SX,et al."Inelastic Neutron-Scattering Measurements of a Three-Dimensional Spin Resonance in the FeAs-Based BaFe1.9Ni0.1As2 Superconductor".PHYSICAL REVIEW LETTERS 102.10(2009). |
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。