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Disordering Transitions in Vortex Matter: Peak Effect and Phase Diagram

C. J. Olson·C. Reichhardt·R. T. Scalettar·G. T. Zimanyi·N. Gronbech-Jensen
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Abstract

Using numerical simulations of magnetically interacting vortices in disordered layered superconductors we obtain the static vortex phase diagram as a function of magnetic field and temperature. For increasing field or temperature, we find a transition from ordered straight vortices to disordered decoupled vortices. This transition is associated with a peak effect in the critical current. For samples with increasing disorder strength the field at which the decoupling occurs decreases. Long range, nonlinear interactions in the c-axis are required to observe the effect.

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C. J. Olson, C. Reichhardt, R. T. Scalettar, G. T. Zimanyi, N. Gronbech-Jensen. 2000-08-23. Disordering Transitions in Vortex Matter: Peak Effect and Phase Diagram. https://doi.org/10.1016/s0921-4534(02)01799-9

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