Critical behavior at de-pinning of a driven disordered vortex matter in 2H-NbS2

Abstract

We report unusual jamming in driven ordered vortex flow in 2H-NbS2. Reinitiating movement in these jammed vortices with a higher driving force, and halting it thereafter once again with a reduction in drive, unfolds a critical behavior centered around the de-pinning threshold via divergences in the lifetimes of transient states, validating the predictions of a recent simulation study, which also pointed out a correspondence between plastic de-pinning in vortex matter and the notion of random organization proposed in the context of sheared colloids undergoing diffusive motion.

Phys. Rev. B (in press, 2012). The paper has 14 pages of Text+ Refs. with 4 figures. (Note as some of the figure files are large in size, to enable faster download, the file size has been kept small and the figure resolution are low. The online version of the paper to appear in PRB will contain the higher resolution figures)

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• Pressure dependence of superconducting critical temperature and upper critical field of 2H-NbS2
• Reversibility, Pattern Formation and Edge Transport in Active Chiral and Passive Disk Mixtures
• Nonlinear Transport, Dynamic Ordering, and Clustering for Driven Skyrmions on Random Pinning
• Reversible to Irreversible Transitions in Periodically Driven Skyrmion Systems
• Persistence of Metastable Vortex Lattice Domains in MgB2 in the Presence of Vortex Motion
• Jamming, Fragility and Pinning Phenomena in Superconducting Vortex Systems
• Negative differential resistance state in the free-flux-flow regime of driven vortices in a single crystal of 2H-NbS${}_2$
• Crossover from Jamming to Clogging Behaviors in Heterogeneous Environments
• Imaging the effect of drive on the low-field vortex melting phenomenon in Ba0.6K0.4Fe2As2 single crystal