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arxiv: cond-mat/0303295 · v1 · submitted 2003-03-16 · ❄️ cond-mat.supr-con · cond-mat.soft

Dynamic transition in driven vortices across the peak effect in superconductors

classification ❄️ cond-mat.supr-con cond-mat.soft
keywords effecttransitioncurrentdrivendynamicflowpeaksuperconductors
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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 varying disorder strength on $I_{p}$.

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