Iron Isotope Effect and Local Lattice Dynamics in the (Ba, K)Fe2As2 Superconductor Studied by Temperature-Dependent EXAFS
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; Wu, ZY
刊名SCIENTIFIC REPORTS
2013
卷号3页码:1750
学科分类Science & Technology - Other Topics
DOI10.1038/srep01750
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.
收录类别SCI
WOS记录号WOS:000318145200011
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被引频次:21[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.ihep.ac.cn/handle/311005/224445
专题中国科学院高能物理研究所_多学科研究中心_期刊论文
中国科学院高能物理研究所_粒子天体物理中心
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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.
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