University of Wollongong
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Phase diagram of vortex matter of type-II superconductors

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posted on 2024-11-16, 10:13 authored by Xuebin Xu, H Fangohr, Shichao Ding, F Zhou, X N Xu, Z H Wang, M Gu, Dongqi ShiDongqi Shi, Shi DouShi Dou
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.

Funding

Current limiting mechanisms in magnesium diboride superconductors

Australian Research Council

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Citation

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.

Journal title

Physical Review B - Condensed Matter and Materials Physics

Volume

83

Issue

1

Language

English

RIS ID

35595

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