  The fluctuation-diamagnetism (FD) above the superconducting transition was
measured in 2H-NbSe2 single crystals. The moderate uniaxial anisotropy of this
compound, and some experimental improvements, allowed to measure the
superconducting fluctuation effects in the two main crystallographic
directions. These results reveal that the nonlocal electrodynamic effects on
the FD are highly anisotropic, and they also discard a possible contribution to
the FD coming from the charge-density waves (CDW) appearing below $Tcdw > Tc in
2H-NbSe2, in agreement with a phenomenological estimate.

Superconductivity