dc.contributor.author | Hacısalihoğlu, Muammer Yasin | |
dc.contributor.author | Paris, Eugenio | |
dc.contributor.author | Joseph, Boby | |
dc.contributor.author | Simonelli, Laura | |
dc.contributor.author | Sato, Taku J. | |
dc.contributor.author | Mizokawa, Takashi | |
dc.contributor.author | Saini, Naurang L. | |
dc.date.accessioned | 2020-12-19T19:55:32Z | |
dc.date.available | 2020-12-19T19:55:32Z | |
dc.date.issued | 2016 | |
dc.identifier.citation | Hacisalihoglu, M.Y., Paris, E., Joseph, b., Simonelli, L., Sato, t.J., Mizokawa, T. & Saini, N.L. (2016). A study of temperature dependent local atomic displacements in a Ba(Fe1-xCox)(2)As-2 superconductor. Physical Chemistry Chemical Physics, 18(13), 9029-9035. https://doi.org/10.1039/c5cp07985c | en_US |
dc.identifier.issn | 1463-9076 | |
dc.identifier.issn | 1463-9084 | |
dc.identifier.uri | https://doi.org/10.1039/c5cp07985c | |
dc.identifier.uri | https://hdl.handle.net/11436/2535 | |
dc.description | Joseph, Boby/0000-0002-3334-7540; HACISALIHOGLU, Muammer Yasin Yasin/0000-0002-0795-2931; HACISALIHOGLU, Muammer Yasin/0000-0002-0795-2931; Joseph, Boby/0000-0002-3334-7540; Sato, Taku J/0000-0003-2511-4998; Mizokawa, Takashi/0000-0002-7682-2348 | en_US |
dc.description | WOS: 000373000100028 | en_US |
dc.description | PubMed: 26966734 | en_US |
dc.description.abstract | We have studied the local structure of a Ba(Fe1-xCox)(2)As-2 superconductor using temperature dependent extended X-ray absorption fine structure (EXAFS) measurements. Polarized EXAFS at the Fe K-edge on an optimally doped (x = 0.06) single crystal has permitted us to determine atomic displacements across the superconducting transition temperature (T-c). the Fe-As bondlength hardly shows any change with temperature; however, the Fe-Fe sublattice reveals a sharp anomaly across T-c, indicated by a significant drop in mean square relative displacements, similar to the one known for cuprates and A15-type superconductors. We have also found a large atomic disorder around the substituted Co, revealed by polarized Co K-edge EXAFS measurements. the Co-Fe/Co bonds are more flexible than the Fe-Fe bonds with the As-height in Co-containing tetrahedra being larger than the one in FeAs4. the results suggest that the local Fe-Fe bondlength fluctuations and the atomic disorder in this sub-lattice should have some important role in the superconductivity of Ba(Fe1-xCox)(2)As-2 pnictides. | en_US |
dc.description.sponsorship | TUBITAK BIDEB foundationTurkiye Bilimsel ve Teknolojik Arastirma Kurumu (TUBITAK); Japan Society for the Promotion of ScienceMinistry of Education, Culture, Sports, Science and Technology, Japan (MEXT)Japan Society for the Promotion of Science [23244068, 23340097]; PRIN of MIUR, ItalyMinistry of Education, Universities and Research (MIUR) [2012X3YFZ2] | en_US |
dc.description.sponsorship | We thank the ESRF staff for the assistance during the measurements. One of us (M. Y. H.) would like to thank Sapienza University for the hospitality. M. Y. H. also acknowledges TUBITAK BIDEB foundation for the fellowship. We would like to thank Mr R. Morinaga for the contribution at the early stage of work. the work is supported by the Grant-in-Aid for Scientific Research from the Japan Society for the Promotion of Science (23244068 and 23340097). the work at Sapienza is partially supported by PRIN2012 (grant number 2012X3YFZ2) of MIUR, Italy. | en_US |
dc.language.iso | eng | en_US |
dc.publisher | Royal Soc Chemistry | en_US |
dc.rights | info:eu-repo/semantics/closedAccess | en_US |
dc.title | A study of temperature dependent local atomic displacements in a Ba(Fe1-xCox)(2)As-2 superconductor | en_US |
dc.type | article | en_US |
dc.contributor.department | RTEÜ, Fen - Edebiyat Fakültesi, Fizik Bölümü | en_US |
dc.contributor.institutionauthor | Hacısalihoğlu, Muammer Yasin | |
dc.identifier.doi | 10.1039/c5cp07985c | |
dc.identifier.volume | 18 | en_US |
dc.identifier.issue | 13 | en_US |
dc.identifier.startpage | 9029 | en_US |
dc.identifier.endpage | 9035 | en_US |
dc.relation.journal | Physical Chemistry Chemical Physics | en_US |
dc.relation.publicationcategory | Makale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanı | en_US |