Extreme vortex pinning in the non-centrosymmetric superconductor CePt$_{3}$Si

Details Extreme vortex pinning in the non-centrosymmetric superconductor CePt$_{3}$Si Extreme vortex pinning in the non-centrosymmetric superconductor CePt$_{3}$Si

2009-04-01

arxiv.org/abs/0904.0257v1

Phys. Rev. B 81, 014527 (2010)

Physics

Condensed Matter

Superconductivity

4 pages, 5 figures

Scientific paper

10.1103/PhysRevB.81.014527

We report on the vortex dynamics of a single crystal of the non-centrosymmetric heavy-fermion superconductor CePt$_{3}$Si. Decays of the remnant magnetization display a clean logarithmic time dependence with rates that follow the temperature dependence expected from the Kim-Anderson theory. The creep rates are lower than observed in any other centrosymmetric superconductor and are not caused by high critical currents. On the contrary, the critical current in CePt$_{3}$Si is considerably lower than in other superconductors with strong vortex pinning indicating that an alternative impediment on the flux line motion might be at work in this superconductor.

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