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

TL;DR

This study investigates the critical behavior of vortex matter in 2H-NbS2 during de-pinning, revealing divergences in transient state lifetimes that support recent simulation predictions and connect vortex plastic de-pinning to random organization concepts.

Contribution

It provides experimental evidence of critical behavior at the de-pinning threshold in vortex matter, validating recent simulation predictions and linking to concepts of random organization.

Findings

Divergences in transient state lifetimes at de-pinning threshold

Reinitiation and halting of vortex motion demonstrate critical behavior

Supports simulation predictions and connects to random organization theory

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.