Muon-spin-spectroscopy study of the penetration depth of FeTe0.5Se0.5

Abstract

Muon spin spectroscopy measurements have been used to study the superconducting state of FeTe0.5Se0.5. The temperature dependence of the in-plane magnetic penetration depth, lambda_ab(T), is found to be compatible with either a two gap s+s wave or an anisotropic s-wave model. The value for lambda_ab(T) at T=0 K is estimated to be lambda_ab(0)=534(2)nm.

5 pages including 5 figures, to appear in Physical Review B, Brief Reports.

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• Superconducting Gap and Symmetry in FeSe_1-x_Te_x_ Studied by Specific Heat in Magnetic Fields
• Superconducting Stiffness and Coherence Length of FeSe${}_{0.5}$Te${}_{0.5}$ Measured in Zero-Applied Field