Temperature and angular dependence of some superconducting state parameters of Lu2Fe3Si5 in two-band anisotropic Ginzburg–Landau theory

Based on the two-band anisotropic Ginzburg–Landau theory, we studied the temperature and angular dependence of the coherence length, the critical velocity of Cooper pairs and the penetration depth of the two-gap superconductor Lu2Fe3Si5. The theoretical results are agreement with the experimental data very well.

► There is no theoretical paper about some superconducting state parameters of Lu2Fe3Si5.
► We propose two-band anisotropic Ginzburg–Landau theory (TBGL).
► We studied some superconducting state parameters of Lu2Fe3Si5 in TBGL theory.
► The theoretical results are agreement with the experimental data.
► The theoretical results can be extended to other two-gap superconductor.