dc.contributor.author | Wakita, Takanori | |
dc.contributor.author | Paris, Eugenio | |
dc.contributor.author | Mizokawa, Takashi | |
dc.contributor.author | Hacisalihoğlu, Muammer Yasin | |
dc.contributor.author | Terashima, Kensei | |
dc.contributor.author | Okazaki, Hiroyuki | |
dc.contributor.author | Proux, Olivier | |
dc.contributor.author | Kieffer, Isabella | |
dc.contributor.author | Lahera, Eric | |
dc.contributor.author | Del Net, William | |
dc.contributor.author | Olivi, Luca | |
dc.contributor.author | Takano, Yoshihiko | |
dc.contributor.author | Muraoka, Yuji | |
dc.contributor.author | Yokoya, Takayoshi | |
dc.contributor.author | Saini, Nauramg L. | |
dc.date.accessioned | 2020-12-19T19:50:15Z | |
dc.date.available | 2020-12-19T19:50:15Z | |
dc.date.issued | 2016 | |
dc.identifier.citation | Wakita, T., Paris, E., Mizokawa, T., Hacisalihoglu, M.Y., Terashima, K., Okazaki, H., Proux, O. ve diğerleri (2016). Determination of the local structure of CsBi4-xPbxTe6 (x=0, 0.5) by X-ray absorption spectroscopy. Physical Chemistry Chemical Physics, 18(36), 25136-25142. https://doi.org/10.1039/c6cp04949d | en_US |
dc.identifier.issn | 1463-9076 | |
dc.identifier.issn | 1463-9084 | |
dc.identifier.uri | https://doi.org/10.1039/c6cp04949d | |
dc.identifier.uri | https://hdl.handle.net/11436/2405 | |
dc.description | HACISALIHOGLU, Muammer Yasin/0000-0002-0795-2931; HACISALIHOGLU, Muammer Yasin Yasin/0000-0002-0795-2931; Proux, Olivier/0000-0003-0385-1815; Mizokawa, Takashi/0000-0002-7682-2348; Takano, Yoshihiko/0000-0002-1541-6928 | en_US |
dc.description | WOS: 000384249300038 | en_US |
dc.description | PubMed: 27711527 | en_US |
dc.description.abstract | We have studied the local structure and valence electronic unoccupied states of thermoelectric CsBi4Te6 and superconducting CsBi3.5Pb0.5Te6 (T-c similar to 3 K) by extended X-ray absorption fine structure (EXAFS) and X-ray absorption near edge structure (XANES) measurements. the Bi-L-3 edge EXAFS reveals wide Bi-Te distance distribution for both compounds indicating complex atomic arrangements in the studied system. the mean square relative displacements (MSRDs) of the Bi-Te bond distances appear largely increased in Pb substituted system due to larger overall local disorder, however, one of the Bi-Te bonds shows a reduced disorder. on the other hand, the Bi-L-3 edge XANES is hardly affected by Pb substitution while the Te-L-1 edge XANES reveals increased density of unoccupied Te 5p states. This suggests that the carriers introduced by the Pb substitution in CsBi4-xPbxTe6 preferentially goes on Te sites. Similarly, the Cs-L-3 edge XANES also shows small changes due to Pb-substitution and reduced local disorder indicated by the reduced width of the Cs-L3 edge white line. We have also shown that the X-ray photoemission spectroscopy (XPS) measurements on various electronic core levels are in a qualitative agreement with the XANES results. These findings are consistent with carrier doping and a reduced disorder in one direction to be likely factors to drive the thermoelectric CsBi4Te6 into a bulk superconductor by Pb-substitution in CsBi4-xPbxTe6. | en_US |
dc.description.sponsorship | TUBITAK BIDEB foundationTurkiye Bilimsel ve Teknolojik Arastirma Kurumu (TUBITAK); MEXTMinistry of Education, Culture, Sports, Science and Technology, Japan (MEXT); JSPSMinistry of Education, Culture, Sports, Science and Technology, Japan (MEXT)Japan Society for the Promotion of Science; Japan Society for the Promotion of ScienceMinistry of Education, Culture, Sports, Science and Technology, Japan (MEXT)Japan Society for the Promotion of Science [1234567, 15H03691]; PRIN of MIUR, ItalyMinistry of Education, Universities and Research (MIUR) [2012X3YFZ2]; Grants-in-Aid for Scientific ResearchMinistry of Education, Culture, Sports, Science and Technology, Japan (MEXT)Japan Society for the Promotion of ScienceGrants-in-Aid for Scientific Research (KAKENHI) [16H04493, 15H03691] Funding Source: KAKEN | en_US |
dc.description.sponsorship | We thank ESRF and Elettra staff for the assistance during the measurements. Two of us (K. T. & T. W.) would like to acknowledge hospitality at the Sapienza University of Rome. One of us (M. Y. H.) would like to thank Sapienza University for the hospitality and TUBITAK BIDEB foundation for the fellowship. This research was partially supported by the Program for Promoting the Enhancement of Research University from MEXT and the Program for Advancing Strategic International Networks to Accelerate the Circulation of Talented Researchers from JSPS. the support from the Grant-in-Aid for Scientific Research from the Japan Society for the Promotion of Science (1234567, 1234567 and 15H03691), is acknowledged. the work is a part of the executive protocol of the general agreement for cooperation between the Sapienza University of Rome and the Okayama University, Japan. 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.subject | Thermoelectric-material | en_US |
dc.subject | Phase | en_US |
dc.subject | Superconductivity | en_US |
dc.title | Determination of the local structure of CsBi4-xPbxTe6 (x=0, 0.5) by X-ray absorption spectroscopy | en_US |
dc.type | article | en_US |
dc.contributor.department | RTEÜ, Fen - Edebiyat Fakültesi, Fizik Bölümü | en_US |
dc.contributor.institutionauthor | Hacisalihoğlu, Muammer Yasin | |
dc.identifier.doi | 10.1039/c6cp04949d | |
dc.identifier.volume | 18 | en_US |
dc.identifier.issue | 36 | en_US |
dc.identifier.startpage | 25136 | en_US |
dc.identifier.endpage | 25142 | en_US |
dc.relation.journal | Physical Chemistry Chemical Physics | en_US |
dc.relation.publicationcategory | Makale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanı | en_US |