Muon spin rotation and relaxation in Pr1−xNdxOs4Sb12: Superconductivity and magnetism in Pr-rich alloys
P.-C. Ho, D. E. MacLaughlin, M. B. Maple, Lei Shu, A. D. Hillier, O. O. Bernal, T. Yanagisawa, P. K. Biswas, Jian Zhang, Cheng Tan, S. D. Hishida, T. McCullough-Hunter
DOI 10.1103/PhysRevB.106.144508 · Physical Review B
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Abstract
The Pr-rich end 0≤x≤0.25 of the alloy series Pr1−xNdxOs4Sb12 has been studied using muon spin rotation and relaxation. The end compound PrOs4Sb12 is an unconventional heavy-fermion superconductor, which exhibits a spontaneous magnetic field associated with broken time-reversal symmetry (TRS) in the superconducting phase. No such field is observed in the Nd-doped alloys for x≥0.05, indicating that TRS has been restored. The superfluid density from the vortex-lattice field distribution is insensitive to Nd concentration for x≲0.2, indicating that TRS restoration does not have a strong effect on the superconducting state. No Nd3+ static magnetism, ordered or disordered, is found down to the lowest temperatures of measurement.
Source-reported materials — not catalogue approval
| Formula | Reported Tc (K) | Pressure (GPa) | Type |
|---|---|---|---|
| PrOs4Sb12 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 1.85 | Pressure not reported | unknown |
| Pr1-xNdxOs4Sb12 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | — | Pressure not reported | unknown |
| Pr0.95Nd0.05Os4Sb12 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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