The de Haas-van Alphen frequencies as well as the effective masses for a magnetic field parallel to the crystallographic The de Haas-van Alphen frequencies ss well as the effective masses for a magnetic field parallel to the crystallographic (c) over right arrow direction are calculated within the local spin density approximation for MgB2 and TaB2 In addition, we analyze the plasma frequencies computed for each Fermi surface sheet. We find a large anisotropy of Fermi velocities in MgB2 in contrast to the nearly isotropic behavior in TaB2 (C) 2002 Elsevier Science Ltd. All rights reserved. direction are calculated within the local spin density approximation for MgB2 and TaB2 In addition, we analyze the plasma frequencies computed for each Fermi surface sheet. We find a large anisotropy of Fermi velocities in MgB2 in contrast to the nearly isotropic behavior in TaB2. (C) 2002 Elsevier Science Ltd. All rights reserved. References: 16
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