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

TL;DR

This study combines muon-spin rotation and ARPES techniques to analyze the superfluid density in various doping levels of (BiPb)_2(SrLa)_2CuO_{6+\delta}, revealing consistent insights into the superconducting state's coherence.

Contribution

The paper presents a combined analysis of bcs ho_s using bmuSR and ARPES, demonstrating their agreement across doping levels and temperature.

Findings

Good agreement between bmuSR and ARPES data on superfluid density

Superfluid density varies systematically with doping and temperature

Insights into the coherence of the superconducting state

Abstract

The superfluid density \rho_s in underdoped (T_c\simeq23K), optimally doped (T_c\simeq35K) and overdoped (T_c\simeq29K) single crystalline (BiPb)_2(SrLa)_2CuO_{6+\delta} 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 \rho_s.