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dc.contributor.author양인상-
dc.date.accessioned2016-08-28T11:08:30Z-
dc.date.available2016-08-28T11:08:30Z-
dc.date.issued1995-
dc.identifier.issn0163-1829-
dc.identifier.otherOAK-12453-
dc.identifier.urihttp://dspace.ewha.ac.kr/handle/2015.oak/228599-
dc.description.abstractRecent studies suggest that the apical oxygen plays an important role in high-Tc superconductivity of mercury-based superconductors HgBa2Can-1CunO2n+2+δ [Hg-12(n-1)n]. Among strong Raman peaks at ∼570 and ∼ 585 cm-1, the mode at ∼ 585 cm-1 has been determined to be the A1g mode of the apical oxygen. However, the origin of the mode near 570 cm-1 is still in question. In order to clarify the origin of the 570 cm-1 mode, we have carried out Raman measurements on the Hg1-xTlxBa2(Ca0.86Sr0.14)2Cu3O8+δ systems, where the amount of the oxygen in the Hg/Tl-O plane is controlled by the doping level of Tl ions. The results show that the 570 cm-1 peak does not arise from the modes of the interstitial oxygens in the Hg/Tl-O plane, but from the A1g-type mode of the apical oxygen. From our analysis, it is shown that the 570 cm-1 mode arises from the apical oxygen OA with the neighboring interstitial oxygen Oδ, while the 585 cm-1 mode is from the OA without the nearest Oδ neighbor. We conclude that the apical oxygens in the Hg-12(n-1)n systems can have two distinctive sets of Oδ environment. © 1995 The American Physical Society.-
dc.languageEnglish-
dc.titleRaman modes of the apical oxygen in mercury-based superconductors-
dc.typeArticle-
dc.relation.issue21-
dc.relation.volume52-
dc.relation.indexSCOPUS-
dc.relation.startpage15078-
dc.relation.lastpage15081-
dc.relation.journaltitlePhysical Review B-
dc.identifier.doi10.1103/PhysRevB.52.15078-
dc.identifier.scopusid2-s2.0-0006846641-
dc.author.googleYang I.-S.-
dc.author.googleLee H.-G.-
dc.author.googleHur N.H.-
dc.author.googleYu J.-
dc.contributor.scopusid양인상(7101797839)-
dc.date.modifydate20170518143938-


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