Extremely High Upper Critical Magnetic Field of the Noncentrosymmetric Heavy Fermion Superconductor CeRhSi3
N. Kimura, K. Ito, H. Aoki, S. Uji, T. Terashima
DOI 10.1103/PhysRevLett.98.197001 · Physical Review Letters
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Abstract
We report an extremely high upper critical field Bc2 in the noncentrosymmetric heavy fermion superconductor CeRhSi3 for a magnetic field B along the tetragonal c axis. Bc2(T=0) possibly reaching 30 T is much higher than Bc2(0)=7 T for B⊥c and greatly exceeds the paramagnetic limiting field. The strong anisotropy of Bc2(0) with extremely high Bc2(0) for B∥c is qualitatively explained by the paramagnetic pair-breaking mechanism specific to the noncentrosymmetric superconductor. However, an unusual Bc2(T) curve with a positive curvature for B∥c cannot be explained satisfactorily by conventional orbital pair-breaking models.
Source-reported materials — not catalogue approval
| Formula | Reported Tc (K) | Pressure (GPa) | Type |
|---|---|---|---|
| CeRhSi3 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 1.1 | 2.6 GPa | midpoint |
| CeRhSi3 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 1.1 | 2.6 GPa | midpoint |
| CePt3Si Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | — | Pressure not reported | unknown |
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