The crossovers of the resistance behaviors in the top and bottom surface layers of 2H-NbSe 2

Abstract

The critical currents and the resistances in the top and the bottom surface layers have been studied in 2H-NbSe 2single crystal using the flux transformer geometry. In the peak effect region, the critical currents and the resistances in the top and bottom surface layers have distinctly different values. These results are tentatively understood in terms of an order–disorder transition and have implications for the correlations of the vortex lattice throughout the sample.