Order parameter anisotropy of MgB_2 using specific heat jump of layered superconductors

摘要

The recently obtained analytical result for renormalization of the jump of the heat capacity (Cs ― C_N)/C_N by anisotropy of the order parameter is applied to the layered superconductors. The graph of (C_S ― C_N)/C_N vs. the anisotropy of the order parameter allows a direct determination of the gap anisotropy in MgB_2 using available experimental data.