Magnetic-field-enhanced aniferromagnetism in the noncentrosymmetric heavy-fermion superconductor CePt3Si
K. Kaneko, O. Stockert, B. Fåk, S. Raymond, M. Skoulatos, T. Takeuchi, Y. Ōnuki
DOI 10.1103/PhysRevB.89.241105 · Physical Review B
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Abstract
The effect of magnetic field on the static and dynamic spin correlations in the noncentrosymmetric heavy-fermion superconductor CePt3Si was investigated by neutron scattering. The application of a magnetic field B increases the antiferromagnetic (AFM) peak intensity. This increase depends strongly on the field direction: for B∥[0 0 1] the intensity increases by a factor of 4.6 at a field of 6.6 T, which corresponds to more than a doubling of the AFM moment, while the moment increases by only 10% for B∥[1 0 0] at 5 T. This is in strong contrast to the inelastic response near the antiferromagnetic ordering vector, where no marked field variations are observed for B∥[0 0 1] up to 3.8 T. The results reveal that the AFM state in CePt3Si, which coexists with superconductivity, is distinctly different from other unconventional superconductors.
Source-reported materials — not catalogue approval
| Formula | Reported Tc (K) | Pressure (GPa) | Type |
|---|---|---|---|
| CePt3Si Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 0.45 | Pressure unresolved | unknown |
| CePt3Si Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 0.45 | Pressure unresolved | unknown |
| UPd2Al3 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | — | Pressure not reported | unknown |
| CeCoIn5 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | — | Pressure not reported | unknown |
| PrOs4Sb12 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | — | Pressure not reported | unknown |
| CeCu2Si2 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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