de Haas–van Alphen effect in anisotropic superconductor well below Hc2

We study a semi-classical approach to the determination of the oscillatory magnetization of an anisotropic superconductor in a magnetic field. The field is such that the spacing d between flux tubes is large compared to the coherence length ξ0 and is small compared to the penetration depth. The low temperature de Haas van Alphen effect is enhanced by the Dingle temperature being reduced by a factor of d/ξ0 for the case of line of zeros of the gap parameter. For point zeros a smaller effect is obtained.