Nelson-Kosterlitz jump in Bi2Sr2CaCuOx, single crystals
Artemenko S. N. , Gorlova I. G., Latyshev Yu. I.
Current-voltage characteristics of the Vol Γ type have been observed in the ab plane of BSCCO single crystals at temperatures below Tc, with a characteristic dependence a (T) with a universal jump at Τ = Tc. The results of the measurements are explained in terms of a Kosterlitz-Thouless transition accompanied by the creation of 2D magnetic vortices within the superconducting layers.