Publication Details

Xu, X. B., Fangohr, H., Ding, S. Y., Zhou, F., Xu, X. N., Wang, Z. H., Gu, M., Shi, D. Q. & Dou, S. Xue. (2011). Phase diagram of vortex matter of type-II superconductors. Physical Review B: Condensed Matter and Materials Physics, 83 (1), 014501-1-014501-5.


We propose a model to construct the phase diagram for type-II superconductors through molecular-dynamics simulation. In this model, the Abrikosov vortices interact with long-range repulsion and short-range attraction. We are able to obtain the phase diagrams consisting of the vortex lattice, the intermediate-mixed phase (IMP), and the disordered vortex phase in the B-T , B-κ, and B-q planes, where B is induction, κ is the Ginzburg-Landau parameter, and q is the relative strength of the attraction to repulsion interactions between vortices. The IMP is in the form of a superlattice of either vortex bubbles or parallel vortex stripes, agreeing excellently with experimental results that have not yet been explained by existing models.

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