Superconducting-Gap Anisotropy of Iron Pnictides Investigated via Combinatorial Microwave Measurements.

ABSTRACT: One of the most significant issues for superconductivity is clarifying the momentum-dependent superconducting gap Δ([Formula: see text]), which is closely related to the pairing mechanism. To elucidate the gap structure, it is essential to investigate Δ([Formula: see text]) in as many different physical quantities as possible and to crosscheck the results obtained in different methods with each other. In this paper, we report a combinatorial investigation of the superfluid density and the flux-flow resistivity of iron-pnictide superconductors; LiFeAs and BaFe₂(As_1-xP_x)₂ (x = 0.3, 0.45). We evaluated Δ([Formula: see text]) by fitting these two-independent quantities with a two-band model simultaneously. The obtained Δ([Formula: see text]) are cons

SUBMITTER: Okada T 

PROVIDER: S-EPMC7184760 | biostudies-literature | 2020 Apr

REPOSITORIES: biostudies-literature