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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
2013
Source PublicationSCIENTIFIC REPORTS
ISSN2045-2322
Volume3Pages:1750
AbstractCurrently 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.
Subject AreaScience & Technology - Other Topics
DOI10.1038/srep01750
Indexed BySCI ; ADS
Language英语
WOS IDWOS:000318145200011
ADS Bibcode2013NatSR...3E1750C
ADS URLhttps://ui.adsabs.harvard.edu/abs/2013NatSR...3E1750C
ADS CITATIONShttps://ui.adsabs.harvard.edu/abs/2013NatSR...3E1750C/citations
Citation statistics
Cited Times:19 [ADS]
Document Type期刊论文
Identifierhttp://ir.ihep.ac.cn/handle/311005/224445
Collection多学科研究中心
粒子天体物理中心
Recommended Citation
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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