Av. Nikulov et al., COULD EXIST THE ABRIKOSOV VORTEX STATE IN TYPE-II SUPERCONDUCTORS WITHOUT PINNING, Physica. C, Superconductivity, 235, 1994, pp. 1945-1946
The resistive properties of thin NbOx films above and below H-c2 were
investigated experimentally. It was shown that in thin amorphous films
the vortex pinning appears much below H-c2. The position of the vorte
x pinning appearance moves up to H-c2 with film thickness increase and
pinning value increase. A nonperturbative fluctuation theory of the m
ixed state of two-dimensional type-II superconductor in the lowest Lan
dau level (LLL) approximation is proposed.