Penetration depth of electron-doped-infinite-layer Sr${}_{0.88}$La${}_{0.12}$CuO${}_{2+x}$ thin films

Abstract

The in-plane penetration depth of Sr${}_{0.88}$La${}_{0.12}$CuO${}_{2+x}$ thin films at various doping obtained from oxygen reduction has been measured, using AC susceptibility measurements. For the higher doping samples, the superfluid density deviates strongly from the s-wave behavior, suggesting, in analogy with other electron-doped cuprates, a contribution from a nodal hole pocket, or a small gap on the Fermi surface such as an anisotropic s-wave order parameter. The low value of the superfluid densities, likely due to a strong doping-induced disorder, places the superconducting transition of our samples in the phase-fluctuation regime.

References in corpus (9)

• Spin correlations in the electron-doped high-transition-temperature superconductor Nd{2-x}Ce{x}CuO{4+/-delta}
• Quantum critical behaviour in the superfluid density of strongly underdoped ultrathin cuprate films
• Enhancement of the superconducting critical temperature of Sr2CuO3+d up to 95K by ordering dopant atoms
• Nodeless d-wave superconducting pairing due to residual antiferromagnetism in underdoped Pr${}_{2-x}$Ce${}_x$CuO${}_{4-\delta }$
• Optical determination of the superconducting energy gap in electron-doped Pr_{1.85}Ce_{0.15}CuO_4
• Nodeless superconductivity in the infinite-layer electron-doped Sr_0.9La_0.1CuO_2 cuprate superconductor
• Influence of oxygen reduction on the structural and electronic properties of electron-doped Sr1-xLaxCuO2 thin films
• Superconductivity and topological Fermi surface transitions in electron-doped cuprates near optimal doping
• Magnetoresistance and Hall effect in e-doped superconducting SrLaCuO thin films

Cited by in corpus (1)

• Phase-sensitive evidence for dx2-y2-pairing symmetry in the parent-structure high-Tc cuprate superconductor Sr1-xLaxCuO2