Multigap Superconductivity in GdFeAsO${}_{0.88}$ Evidenced by SnS-Andreev Spectroscopy

T. E. Shanygina, S. A. Kuzmichev, M. G. Mikheev +8

Using intrinsic multiple Andreev reflection effect (IMARE) spectroscopy we studied superconducting properties of nearly optimal oxygen-deficient GdFeAsO${}_{0.88}$ polycrystalline sa…