Transition from turbulent to nearly laminar vortex flow in superconductors with periodic pinning

Article

关键词: DYNAMIC PHASES;    VORTICES;    DEFECTS;    FILMS;    LATTICES;   

DOI  :  10.1103/PhysRevB.80.140514

来源: SCIE

【 摘 要 】

We revisit the vortex dynamics in Al thin films containing an artificial periodic array of antidots by means of electrical transport measurements. We clearly identify a turbulent to laminarlike vortex flow transition which manifests itself as a negative differential resistivity. This transition is accompanied by a strong irreversibility in the voltage-current characteristics. The dynamical phase diagrams obtained as a function of commensurability, temperature, and driving force are in good agreement with the early predictions by Reichhardt et al. [Phys. Rev. Lett. 78, 2648 (1997)] based on molecular dynamic simulations.

【 授权许可】

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