Interpretation of the de Haas-van Alphen experiments in MgB2

[摘要] Recent reports on quantum oscillations in MgB2 provide valuable information on three important aspects of this material: (i) electronic structure near the Fermi level, (ii) disparity of the electron-phonon interaction between the two systems of bands, and (iii) renormalization of spin susceptibility. However, extraction of most of this information requires highly accurate band-structure calculations of the relevant quantities. In this paper we provide such calculations and use them to analyze the experimental data.

[关键词] SUPERCONDUCTIVITY