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Superfluid Density and Angular Dependence of the Energy Gap in Optimally Doped (BiPb)2(SrLa)2CuO6+δ

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Author(s)

S. Strässle, R Khasanov, T. Kondo, David Owen Goudie Heron, A. Kaminski, H. Keller, Stephen Leslie Lee, T. Takeuchi

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Abstract

We present a muon-spin rotation study of the optimally doped cuprate superconductor (BiPb)2(SrLa)2 CuO6+δ. The measured magnetic field dependence of the in-plane magnetic penetration λab suggests superconductivity with a dominant d-wave order parameter. The comparison of the temperature dependence of λab with calculations, assuming the angular gap symmetry as obtained from photoemission measurements, is consistent with a partial suppression of the quasi-particle weight towards the anti-nodal region of the Fermi surface. This suggests that the superconducting and the pseudogap state are dominated by different parts of the Fermi surface.
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Original languageEnglish
Pages (from-to)189-193
JournalJournal of Superconductivity
Volume22
Issue number2
DOIs
Publication statusPublished - 2009

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