The critical current density in type-II superconducting bulk materials

Details The critical current density in type-II superconducting bulk materials The critical current density in type-II superconducting bulk materials

2012-04-15

arxiv.org/abs/1204.3252v1

Physics

Condensed Matter

Superconductivity

10 pages

Scientific paper

The critical current density Jc in type-II conventional and high-Tc superconducting bulk materials is investigated based on the quantum theory for the vortex dynamics. It is shown that for a constant magnetic field, the critical current density Jc decreases weakly with increasing temperature when TT_f,Jc decays exponentially; while for a constant temperature, Jc first decreases, then increases after reaching a maximum, and finally decreases again as the magnetic field increases. These results are in agreement with the experiments.

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