Nonuniform Self-Organized Dynamical States in Superconductors with Periodic Pinning

Abstract

We consider magnetic flux moving in superconductors with periodic pinning arrays. We show that sample heating by moving vortices produces negative differential resistivity (NDR) of both N and S type (i.e., N- and S-shaped) in the voltage-current characteristic (VI curve). The uniform flux flow state is unstable in the NDR region of the VI curve. Domain structures appear during the NDR part of the VI curve of an N type, while a filamentary instability is observed for the NDR of an S type. The simultaneous existence of the NDR of both types gives rise to the appearance of striking self-organized (both stationary and non-stationary) two-dimensional dynamical structures.

arXiv comment4 pages, 2 figures

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• Dynamics of self-organized driven particles with competing range interaction
• Lattice effects and current reversal in superconducting ratchets
• The dynamics of colloids in a narrow channel driven by a non-uniform force
• Collective vortex phases in periodic plus random pinning potential
• Kink-antikink vortex transfer in periodic-plus-random pinning potential: Theoretical analysis and numerical experiments
• Vortex density waves and negative absolute resistance in patterned superconductors
• Negative differential resistance state in the free-flux-flow regime of driven vortices in a single crystal of 2H-NbS${}_2$
• Coherent and Incoherent Vortex Flow States in Crossed Channels
• Chirped pulse control over the melting of superconductors