Unscreening Effect on Fe-Pnictide Superconductor

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dc.creatorFuseya, Yuki
dc.creatorKariyado, Toshikaze
dc.creatorOgata, Masao
dc.date2008-11-19
dc.date.accessioned2026-07-07T12:40:25Z
dc.date.available2026-07-07T12:40:25Z
dc.descriptionWe study a microscopic mechanism of Fe-pnictide superconductor, considering the screening effects of Coulomb interaction in addition to the conventional spin-fluctuation mechanism. It is shown that, by electron doping, the transition temperature of superconductivity increases due to the "unscreening" effect even though the density of states decrease, while that of spin-density wave rapidly decreases due to breaking of nesting conditions. Our results give a clear interpretation to the mystery of interrelation between T_c and the density of states observed in the Fe-pnictide superconductors.
dc.description4 pages, 5 figures
dc.identifierhttps://arxiv.org/abs/0811.3052
dc.identifierhttp://arxiv.org/abs/0811.3052
dc.identifierJ. Phys. Soc. Jpn. 78 (2009) 023703
dc.identifierdoi:10.1143/JPSJ.78.023703
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/219436
dc.subjectSuperconductivity
dc.subjectStrongly Correlated Electrons
dc.titleUnscreening Effect on Fe-Pnictide Superconductor
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