Enhancement of the superconducting transition temperature in La2-xSrxCuO4 bilayers: Role of pairing and phase stiffness

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dc.creatorYuli, Ofer
dc.creatorAsulin, Itay
dc.creatorIomin, Leonid
dc.creatorKoren, Gad
dc.creatorMillo, Oded
dc.creatorOrgad, Dror
dc.date2008-05-04
dc.date2008-08-12
dc.date.accessioned2026-07-07T09:55:48Z
dc.date.available2026-07-07T09:55:48Z
dc.descriptionThe superconducting transition temperature, Tc, of bilayers comprising underdoped La2-xSrxCuO4 films capped by a thin heavily overdoped metallic La1.65Sr0.35CuO4 layer, is found to increase with respect to Tc of the bare underdoped films. The highest Tc is achieved for x = 0.12, close to the 'anomalous' 1/8 doping level, and exceeds that of the optimally-doped bare film. Our data suggest that the enhanced superconductivity is confined to the interface between the layers. We attribute the effect to a combination of the high pairing scale in the underdoped layer with an enhanced phase stiffness induced by the overdoped film.
dc.descriptionPublished version
dc.identifierhttps://arxiv.org/abs/0805.0405
dc.identifierhttp://arxiv.org/abs/0805.0405
dc.identifierPhys. Rev. Lett. 101, 057005 (2008)
dc.identifierdoi:10.1103/PhysRevLett.101.057005
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/166758
dc.subjectSuperconductivity
dc.subjectStrongly Correlated Electrons
dc.titleEnhancement of the superconducting transition temperature in La2-xSrxCuO4 bilayers: Role of pairing and phase stiffness
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