Distinct doping dependences of the pseudogap and superconducting gap La$_{2-x}$Sr$_{x}$CuO$_4$ cuprate superconductors

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dc.creatorHashimoto, M.
dc.creatorYoshida, T.
dc.creatorTanaka, K.
dc.creatorFujimori, A.
dc.creatorOkusawa, M.
dc.creatorWakimoto, S.
dc.creatorYamada, K.
dc.creatorKakeshita, T.
dc.creatorEisaki, H.
dc.creatorUchida, S.
dc.date2006-10-27
dc.date2007-04-16
dc.date.accessioned2026-07-07T07:56:35Z
dc.date.available2026-07-07T07:56:35Z
dc.descriptionWe have performed a temperature-dependent angle-integrated photoemission study of lightly-doped to heavily-overdoped La$_{2-x}$Sr$_{x}$CuO$_4$ and oxygen-doped La$_2$CuO$_{4.10}$. We found that both the magnitude $Δ$* of the (small) pseudogap and the temperature \textit{T}* at which the pseudogap is opened increases with decreasing hole concentration, consistent with previous studies. On the other hand, the superconducting gap $Δ_{sc}$ was found to remain small for decreasing hole concentration. The results can be explained if the superconducting gap opens only on the Fermi arc around the nodal (0,0)-($π,π$) direction while the pseudogap opens around $\sim$($π$, 0).
dc.description4 pages, 3 figures
dc.identifierhttps://arxiv.org/abs/cond-mat/0610758
dc.identifierhttp://arxiv.org/abs/cond-mat/0610758
dc.identifierPhys. Rev. B 75, 140503(R) (2007)
dc.identifierdoi:10.1103/PhysRevB.75.140503
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/127362
dc.subjectStrongly Correlated Electrons
dc.subjectSuperconductivity
dc.titleDistinct doping dependences of the pseudogap and superconducting gap La$_{2-x}$Sr$_{x}$CuO$_4$ cuprate superconductors
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