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.

4 pages, 2 figures

Cited by in corpus (9)

• Negative differential resistivity in superconductors with periodic arrays of pinning sites
• Moving Vortex Phases, Dynamical Symmetry Breaking, and Jamming for Vortices in Honeycomb Pinning Arrays
• Enhancing the critical current in quasiperiodic pinning arrays below and above the matching magnetic flux
• 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
• 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${}_2$
• Chirped pulse control over the melting of superconductors