Dynamic transition in driven vortices across the peak effect in superconductors
Mahesh Chandran, R. T. Scalettar, G. T. Zimányi
DOI 10.1103/PhysRevB.67.052507 · Physical Review B
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Abstract
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 Ip 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 Ip(B) follows the behavior of the critical current Ic(B). Specifically, in the peak effect regime Ip(B) increases rapidly along with Ic. We also discuss the effect of varying disorder strength on Ip.
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