Interpretation of the de Haas - van Alphen experiments in MgB2

Abstract

Recent reports on quantum oscillations in MgB2 provide valuable information on three important aspects of this material: (1) electronic structure near the Fermi level, (2) disparity of the electron-phonon interaction between the two systems of bands (3) 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.

Version accepted for publication (PRB RC). Changes made to the discussion, reflecting the newest e-publications from other groups; other small changes

References in corpus (5)

• Far-infrared optical conductivity gap in superconducting MgB2 films
• Electronic structure of MgB${}_2$ from angle-resolved photoemission spectroscopy
• Manifestation of multiband optical properties of MgB${}_2$
• NMR relaxation rates and Knight shifts in MgB2
• Implications of reflectance measurements on the mechanism for superconductivity in MgB${}_2$

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• The Tc amplification by quantum interference effects in diborides
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• Damping of the de Haas-van Alphen oscillations in the superconducting state of MgB_2
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• De Haas-van Alphen effect and Fermi surface properties of single crystal CrB2
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• Pressure Effects and Large Polarons in Layered MgB_2 Superconductor