Phenomenological two-gap model for the specific heat of MgB <sub>2</sub>
Phenomenological two-gap model for the specific heat of MgB <sub>2</sub>
We show that the specific heat of the superconductor MgB2 in zero field, for which significant non-BCS features have been reported, can be fitted, essentially within experimental error, over the entire range of temperature to Tc by a phenomenological two-gap model. The resulting gap parameters agree with previous determinations from …