Experimental elucidation of the origin of the 'double spin resonances' in Ba(Fe1-xCox)(2)As-2
文献类型：期刊论文
| 作者 | Hashimoto, M; Chi, SX; Christianson, AD; Sun HL(孙华蕾); Li XD(李晓东); Sun, HL; Valdivia, P; Kim, MG; Xu, ZJ; Berlijn, T |
| 刊名 | PHYSICAL REVIEW B
 |
| 出版日期 | 2016 |
| 卷号 | 93期号:20页码:205149 |
| ISSN号 | 2469-9950 |
| DOI | 10.1103/PhysRevB.93.205149 |
| 文献子类 | Article |
| 英文摘要 | We report a combined study of the spin resonances and superconducting gaps for underdoped (T-c = 19 K), optimally doped (T-c = 25 K), and overdoped (T-c = 19 K) Ba(Fe1-xCox)(2)As-2 single crystalswith inelastic neutron scattering and angle resolved photoemission spectroscopy. We find a quasi-two-dimensional spin resonance whose energy scales with the superconducting gap in all three compounds. In addition, anisotropic low energy spin excitation enhancements in the superconducting state have been deduced and characterized for the under and optimally doped compounds. Our data suggest that the quasi-two-dimensional spin resonance is a spin exciton that corresponds to the spin singlet-triplet excitations of the itinerant electrons. However, the intensity enhancements of the anisotropic spin excitations are dominated by the out-of-plane spin excitations of the ordered moments due to the suppression of damping in the superconducting state. Hence we offer an interpretation of the double energy scales differing from previous interpretations based on anisotropic superconducting energy gaps and systematically explain the doping-dependent trend across the phase diagram. |
| 电子版国际标准刊号 | 2469-9969 |
| 语种 | 英语 |
| WOS记录号 | WOS:000376638700003 |
| 源URL | [http://ir.ihep.ac.cn/handle/311005/287059]  |
| 专题 | 中国科学院高能物理研究所 |
| 推荐引用方式 GB/T 7714 | Hashimoto, M,Chi, SX,Christianson, AD,et al. Experimental elucidation of the origin of the 'double spin resonances' in Ba(Fe1-xCox)(2)As-2[J]. PHYSICAL REVIEW B,2016,93(20):205149. |
| APA | Hashimoto, M.,Chi, SX.,Christianson, AD.,孙华蕾.,李晓东.,...&Yi, M.(2016).Experimental elucidation of the origin of the 'double spin resonances' in Ba(Fe1-xCox)(2)As-2.PHYSICAL REVIEW B,93(20),205149. |
| MLA | Hashimoto, M,et al."Experimental elucidation of the origin of the 'double spin resonances' in Ba(Fe1-xCox)(2)As-2".PHYSICAL REVIEW B 93.20(2016):205149. |
入库方式： OAI收割
来源：高能物理研究所
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。