Superconductivity in CeO_{1-x}F_xFeAs with upper critical field of 94 T

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dc.creatorPrakash, J.
dc.creatorSingh, S. J.
dc.creatorPatnaik, S.
dc.creatorGanguli, A. K.
dc.date2008-12-24
dc.date.accessioned2026-07-07T12:55:23Z
dc.date.available2026-07-07T12:55:23Z
dc.descriptionWe have successfully synthesized Ce based oxypnictide with fluorine doping (CeO_{1-x}F_xFeAs) by a two step solid state reaction method. Detailed XRD and EDX confirm the crystal structure and chemical compositions. We observe that an extremely high Hc2(0) of 94 T can be achieved in the x = 0.1 composition. This increase in Hc2(0) is accompanied by a decrease in transition temperature (38.4 K in x = 0.1 composition) from 42.5 K for the x = 0.2 phase. The in-plane Ginzburg-Landau coherence length is estimated to be ~ 27 A at x = 0.2 suggesting a moderate anisotropy in this class of superconductors. The Seebeck coefficient confirms the majority carrier to be electrons and strong dominance of electron-electron correlations in this multiband superconductor.
dc.identifierhttps://arxiv.org/abs/0812.4520
dc.identifierhttp://arxiv.org/abs/0812.4520
dc.identifierPhysica C 469 (2009) 82--85
dc.identifierdoi:10.1016/j.physc.2008.11.008
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/224235
dc.subjectSuperconductivity
dc.titleSuperconductivity in CeO_{1-x}F_xFeAs with upper critical field of 94 T
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