Coherency of the superconducting state: the muon spin rotation and ARPES studies of (BiPb)_2(SrLa)_2CuO_{6+δ}

Abstract

The superfluid density ρ_s in underdoped (T_c\simeq23K), optimally doped (T_c\simeq35K) and overdoped (T_c\simeq29K) single crystalline (BiPb)_2(SrLa)_2CuO_{6+δ} samples was studied by means of muon-spin rotation (\muSR). By combining the \muSR data with the results of ARPES measurements on similar samples [Nature 457, 296 (2009)] good self-consistent agreement is obtained between two techniques concerning the temperature and the doping evolution of ρ_s.

arXiv comment4 pages, 3 figures.

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• The single- vs. two-gap scenario: the specific heat and the thermodynamic critical field of BeAu superconductor
• Magnetic field induced reduction of the low-temperature superfluid density in cuprate superconductors