Specific heat of the 38-K superconductor MgB_2 in the normal and superconducting state: bulk evidence for a double gap

Alain Junod, Yuxing Wang, Frederic Bouquet +1

The specific heat of two polycrystalline samples of MgB_2 is presented and analyzed (2 - 300 K, 0 - 16 T), together with magnetic properties. The main characteristics are a low den…