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Low Temperature Susceptibility of the Noncentrosymmetric Superconductor CePt_3Si

D. P. Young·M. Moldovan·X. S. Wu·J. Y. Chan·P. W. Adams
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Abstract

We report ac susceptibility measurements of polycrystalline CePt_3Si down to 60 mK and in applied fields up to 9 T. In zero field, a full Meissner state emerges at temperatures T/Tc < 0.3, where Tc=0.65 K is the onset transition temperature. Though transport measurements show a relatively high upper critical field Bc2 ~ 4-5 T, the low temperature susceptibility, χ', is quite fragile to applied field, with χ' diminishing rapidly in fields of a few kG. Interestingly, the field dependence of χ' is well described by the power law, 4πχ'=(B/B_c)^{1/2}, where Bc is the field at which the onset of resistance is observed in transport measurements.

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D. P. Young, M. Moldovan, X. S. Wu, J. Y. Chan, P. W. Adams. 2004-06-25. Low Temperature Susceptibility of the Noncentrosymmetric Superconductor CePt_3Si. https://doi.org/10.1103/physrevlett.94.107001

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