Miclea, C. F., Mota, A. C., Nicklas, M., Cardoso, R., Steglich, F., Sigrist, M., Prokofiev, A., & Bauer, E. (2010). Extreme vortex pinning in the noncentrosymmetric superconductor CePt₃Si. Physical Review B, 81(014527). https://doi.org/10.1103/physrevb.81.014527
E138-04 - Forschungsbereich Quantum Materials E138-03 - Forschungsbereich Functional and Magnetic Materials
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Journal:
Physical Review B
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ISSN:
2469-9950
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Date (published):
28-Jan-2010
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Number of Pages:
5
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Publisher:
AMER PHYSICAL SOC
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Peer reviewed:
Yes
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Keywords:
Condensed Matter Physics; Electronic, Optical and Magnetic Materials
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Abstract:
We report on the vortex dynamics of a single crystal of the noncentrosymmetric heavy-fermion superconductor CePt3Si. Decays of the remnant magnetization display a 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 CePt3Si 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.
