Damping of the de Haas-van Alphen oscillations in the superconducting state of MgB_2

J. D. Fletcher, A. Carrington, S. M. Kazakov +1

The de Haas-van Alphen (dHvA) signal arising from orbits on the $\pi$ Fermi surface sheet of the two-gap superconductor MgB${}_2$ has been observed in the vortex state below $H_{c2}$.…