Lattice anomalies in the FeAs4 tetrahedra of the NdFeAsO0.85 superconductor that disappear at Tc

Calamiotou, M; Margiolaki, I; Gantis, A; Siranidi, E; Ren, ZA; Zhao, ZX; Liarokapis, E

dc.contributor.author	Calamiotou, M	en
dc.contributor.author	Margiolaki, I	en
dc.contributor.author	Gantis, A	en
dc.contributor.author	Siranidi, E	en
dc.contributor.author	Ren, ZA	en
dc.contributor.author	Zhao, ZX	en
dc.contributor.author	Liarokapis, E	en
dc.date.accessioned	2014-03-01T01:33:42Z
dc.date.available	2014-03-01T01:33:42Z
dc.date.issued	2010	en
dc.identifier.issn	0295-5075	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/20541
dc.subject	High Resolution	en
dc.subject	Superconductors	en
dc.subject	Temperature Dependence	en
dc.subject	X Ray Powder Diffraction	en
dc.subject.classification	Physics, Multidisciplinary	en
dc.subject.other	POWDER DIFFRACTION	en
dc.title	Lattice anomalies in the FeAs4 tetrahedra of the NdFeAsO0.85 superconductor that disappear at Tc	en
heal.type	journalArticle	en
heal.identifier.primary	10.1209/0295-5075/91/57005	en
heal.identifier.secondary	http://dx.doi.org/10.1209/0295-5075/91/57005	en
heal.identifier.secondary	57005	en
heal.language	English	en
heal.publicationDate	2010	en
heal.abstract	High-resolution synchrotron X-ray powder diffraction (SXRPD) was used to study the temperature dependence of the oxygen-deficient NdFeAsO0.85 superconducting compound. By employing a dense temperature sampling we have managed to reveal unnoticed structural modifications that start around similar to 180 K, and disappear at the transition temperature. The data show minor changes of the structural characteristics in the Nd-O charge reservoir layer while in the superconducting Fe-As layer the FeAs4 tetrahedron shows gradual modifications below similar to 180 K, which suddenly disappear at T-c strongly indicating a connection with superconductivity. Copyright (c) EPLA, 2010	en
heal.publisher	EPL ASSOCIATION, EUROPEAN PHYSICAL SOCIETY	en
heal.journalName	EPL	en
dc.identifier.doi	10.1209/0295-5075/91/57005	en
dc.identifier.isi	ISI:000282123300026	en
dc.identifier.volume	91	en
dc.identifier.issue	5	en