Unusual photoemission resonances of oxygen-dopant induced states in Bi$_{2}$Sr$_2$CaCu$_2$O$_{8+x}$

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dc.creatorRichard, P.
dc.creatorPan, Z. -H.
dc.creatorNeupane, M.
dc.creatorFedorov, A. V.
dc.creatorValla, T.
dc.creatorJohnson, P. D.
dc.creatorGu, G. D.
dc.creatorKu, W.
dc.creatorWang, Z.
dc.creatorDing, H.
dc.date2006-04-21
dc.date.accessioned2026-07-07T12:35:41Z
dc.date.available2026-07-07T12:35:41Z
dc.descriptionWe have performed an angular-resolved photoemission study of underdoped, optimally doped and overdoped Bi$_{2}$Sr$_2$CaCu$_2$O$_{8+x}$ samples using a wide photon energy range (15 - 100 eV). We report a small and broad non-dispersive A$_{1g}$ peak in the energy distribution curves whose intensity scales with doping. We attribute it to a local impurity state similar to the one observed recently by scanning tunneling spectroscopy and identified as the oxygen dopants. Detailed analysis of the resonance profile and comparison with the single-layered Bi$_{2}$Sr$_2$CuO$_{6+x}$ suggest a mixing of this local state with Cu via the apical oxygens.
dc.description4 pages, 4 figures
dc.identifierhttps://arxiv.org/abs/cond-mat/0604521
dc.identifierhttp://arxiv.org/abs/cond-mat/0604521
dc.identifierPhysical Review B 74, 094512 (2006)
dc.identifierdoi:10.1103/PhysRevB.74.094512
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/217843
dc.subjectSuperconductivity
dc.titleUnusual photoemission resonances of oxygen-dopant induced states in Bi$_{2}$Sr$_2$CaCu$_2$O$_{8+x}$
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