Dynamic transition in driven vortices across the peak effect in superconductors

Mahesh Chandran, R. T. Scalettar, G. T. Zimányi
2003 Physical Review B (Condensed Matter)  
We study the zero-temperature dynamic transition from the disordered flow to an ordered flow state in driven vortices in type-II superconductors. The transition current I_p is marked by a sharp kink in the V(I) characteristic with a concomitant large increase in the defect concentration. On increasing magnetic field B, the I_p(B) follows the behaviour of the critical current I_c(B). Specifically, in the peak effect regime I_p(B) increases rapidly along with I_c. We also discuss the effect of
more » ... ss the effect of varying disorder strength on I_p.
doi:10.1103/physrevb.67.052507 fatcat:ey3ekbqqona6znfj3eufse3zlu