Abstract
The Fermi surface of 2 H-NbSe 2 has been investigated using the torque method in strong magnetic fields up to 27 T and at temperatures down to 0.4 K. We show that using the torque method it was possible to observe oscillations at orientations below ⊗ ⩽ 15° ⊗ is the angle between the c-axis and the magnetic field). The lateral extent of the pan cake Fermi surface results larger as compared to previous estimations. Measurements at orientations 34° ⩽ ⊗ ⩽ 55° show clearly the existence of a spin zero at ⊗ = 43°. From this possible value of the effective g-factor could be deduced.
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