Superconducting Gap and Pseudogap in Sm(O$_{1-x}$F$_x$)FeAs Layered Superconductor from Photoemission Spectroscopy

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dc.creatorLiu, Haiyun
dc.creatorJia, Xiaowen
dc.creatorZhang, Wentao
dc.creatorZhao, Lin
dc.creatorMeng, Jianqiao
dc.creatorLiu, Guodong
dc.creatorDong, Xiaoli
dc.creatorWu, G.
dc.creatorLiu, R. H.
dc.creatorChen, X. H.
dc.creatorRen, Z. A.
dc.creatorYi, Wei
dc.creatorChe, G. C.
dc.creatorChen, G. F.
dc.creatorWang, N. L.
dc.creatorWang, Guiling
dc.creatorZhou, Yong
dc.creatorZhu, Yong
dc.creatorWang, Xiaoyang
dc.creatorZhao, Zhongxian
dc.creatorXu, Zuyan
dc.creatorChen, Chuangtian
dc.creatorZhou, X. J.
dc.date2008-05-26
dc.date.accessioned2026-07-07T10:07:19Z
dc.date.available2026-07-07T10:07:19Z
dc.descriptionHigh resolution photoemission measurements have been carried out on non-superconducting SmOFeAs parent compound and superconducting Sm(O$_{1-x}$F$_x$)FeAs (x=0.12, and 0.15) compounds. The momentum-integrated spectra exhibit a clear Fermi cutoff that shows little leading-edge shift in the superconducting state which suggests the Fermi surface sheet(s) around the $Γ$ point may not be gapped in this multiband superconductors. A robust feature at 13 meV is identified in all these samples. Spectral weight suppression near E$_F$ with decreasing temperature is observed in both undoped and doped samples that points to a possible existence of a pseudogap in these Fe-based compounds.
dc.description4 pages, 4 figures
dc.identifierhttps://arxiv.org/abs/0805.3821
dc.identifierhttp://arxiv.org/abs/0805.3821
dc.identifierChinese Physics Letters 25 (2008) 3761
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/170592
dc.subjectSuperconductivity
dc.subjectStrongly Correlated Electrons
dc.titleSuperconducting Gap and Pseudogap in Sm(O$_{1-x}$F$_x$)FeAs Layered Superconductor from Photoemission Spectroscopy
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