Transverse Depinning and Melting of a Moving Vortex Lattice in Driven Periodic Josephson Junction Arrays

1998/12/31 by V. I. Marconi, Veronica I. Marconi, Daniel Dominguez +1 · 2 citations
Computer Science · Physics and Astronomy · #Nonlinear Dynamics and Pattern Formation #Physics of Superconductivity and Magnetism #Quantum and electron transport phenomena #cond-mat.stat-mech #cond-mat.supr-con

paper · pdf · doi:10.1103/physrevlett.82.4922

4 pages, 4 figures, Figure 2 changed, added new references

arxiv created 1999/03/11 · openalex publication_date 1999/06/14 · arxiv updated 2009/11/30 · openalex created_date 2016/06/24 · openalex updated_date 2026/07/28

Abstract

We study the effect of thermal fluctuations in a vortex lattice driven in the periodic pinning of a Josephson junction array. The phase diagram current ( I) vs temperature ( T) is studied. Above the critical current I_c(T) we find a moving vortex lattice (MVL) with anisotropic Bragg peaks. For large currents I\ensuremath≫I_c(T), there is a melting transition of the MVL at T_M(I). When applying a small transverse current to the MVL, there is negligible dissipation at low T. We find an onset of transverse vortex motion at a transverse depinning temperature T_tr(I)<T_M(I).

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