Iron Isotope Effect and Local Lattice Dynamics in the (Ba, K)Fe2As2 Superconductor Studied by Temperature-Dependent EXAFS
文献类型：期刊论文
| 作者 | Chu, WS; Cheng, J; Chu WS(储旺盛) ; Cheng J(程杰); Chu SQ(储胜启); Hu TD(胡天斗); 吴自玉;Chu, SQ; Hu, TD; Marcelli, A; Chen, XH
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| 刊名 | SCIENTIFIC REPORTS
 |
| 出版日期 | 2013 |
| 卷号 | 3页码:1750 |
| 英文摘要 | Currently available investigations of the isotope effect in Fe-based superconductors are all based on macroscopic resistivity and susceptibility measurements and results are highly controversial. Here we present an investigation of the Fe isotope effect in the (Ba, K)Fe2As2 superconductor by temperature-dependent EXAFS in the framework of Einstein model. This method separates the static structural isotope contribution and the local lattice isotope contribution. Results point out the isotope substitution has a negligible effect on inter-atomic distances. On the contrary, both the local vibrations of the Fe-As and the Fe-Fe bonds show strong iron isotope dependence, which is a marker of an "intrinsic'' isotope effect. This bulk iron isotope contribution to the local lattice dynamics suggests the local phonons play an important role in the (Ba, K)Fe2As2 superconductor and a three-dimensional electron-phonon interaction should be considered to understand the superconducting mechanism of iron-based superconductors. |
| 学科主题 | Science & Technology - Other Topics |
| 收录类别 | SCI |
| WOS记录号 | WOS:000318145200011 |
| 公开日期 | 2016-05-03 |
| 源URL | [http://ir.ihep.ac.cn/handle/311005/224445]  |
| 专题 | 高能物理研究所_多学科研究中心 高能物理研究所_粒子天体物理中心 |
| 推荐引用方式 GB/T 7714 | Chu, WS,Cheng, J,Chu WS,et al. Iron Isotope Effect and Local Lattice Dynamics in the (Ba, K)Fe2As2 Superconductor Studied by Temperature-Dependent EXAFS[J]. SCIENTIFIC REPORTS,2013,3:1750. |
| APA | Chu, WS.,Cheng, J.,储旺盛.,程杰.,储胜启.,...&Wu, ZY.(2013).Iron Isotope Effect and Local Lattice Dynamics in the (Ba, K)Fe2As2 Superconductor Studied by Temperature-Dependent EXAFS.SCIENTIFIC REPORTS,3,1750. |
| MLA | Chu, WS,et al."Iron Isotope Effect and Local Lattice Dynamics in the (Ba, K)Fe2As2 Superconductor Studied by Temperature-Dependent EXAFS".SCIENTIFIC REPORTS 3(2013):1750. |
入库方式： OAI收割
来源：高能物理研究所
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