Electronic structure of heavily electron-doped BaFe$_{1.7}$Co$_{0.3}$As$_2$ studied by angle-resolved photoemission

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dc.creatorSekiba, Y.
dc.creatorSato, T.
dc.creatorNakayama, K.
dc.creatorTerashima, K.
dc.creatorRichard, P.
dc.creatorBowen, J. H.
dc.creatorDing, H.
dc.creatorXu, Y. -M.
dc.creatorLi, L. J.
dc.creatorCao, G. H.
dc.creatorXu, Z. -A.
dc.creatorTakahashi, T.
dc.date2008-12-22
dc.date2009-03-05
dc.date.accessioned2026-07-07T12:48:54Z
dc.date.available2026-07-07T12:48:54Z
dc.descriptionWe have performed high-resolution angle-resolved photoemission spectroscopy on heavily electron-doped non-superconducting (SC) BaFe$_{1.7}$Co$_{0.3}$As$_2$. We find that the two hole Fermi surface pockets at the zone center observed in the hole-doped superconducting Ba$_{0.6}$K$_{0.4}$Fe$_2$As$_2$ are absent or very small in this compound, while the two electron pockets at the M point significantly expand due to electron doping by the Co substitution. Comparison of the Fermi surface between non-SC and SC samples indicates that the coexistence of hole and electron pockets connected via the antiferromagnetic wave vector is essential in realizing the mechanism of superconductivity in the iron-based superconductors.
dc.description5 pages, 4 figures
dc.identifierhttps://arxiv.org/abs/0812.4111
dc.identifierhttp://arxiv.org/abs/0812.4111
dc.identifierNew J. Phys. 11 (2009) 025020
dc.identifierdoi:10.1088/1367-2630/11/2/025020
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/222221
dc.subjectSuperconductivity
dc.subjectStrongly Correlated Electrons
dc.titleElectronic structure of heavily electron-doped BaFe$_{1.7}$Co$_{0.3}$As$_2$ studied by angle-resolved photoemission
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