Tunneling spectroscopy and magnetization measurements of the superconducting properties of (formula presented)

Cryogenic scanning tunneling microscopy and magnetization measurements were used to study the superconducting properties of (formula presented) The magnetization measurements show a sharp superconductor transition at (formula presented) in agreement with previous works. The tunneling spectra exhibit BCS-like gap structures, with gap parameters in the range of 5 to 7 meV, yielding a ratio of (formula presented) This suggests that (formula presented) is a conventional BCS s-wave superconductor, either in the weak-coupling or in the “intermediate-coupling” regime.