Superconducting and magnetic anisotropy of LnFePO (Ln=La, Pr, and Nd) single crystals
R. E. Baumbach, J. J. Hamlin, P.-C. Ho, I. K. Lum, M. B. Maple
DOI 10.1103/PhysRevB.85.104526 · Physical Review B
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Abstract
The superconducting and magnetic properties of PrFePO and NdFePO are reported. Measurements of the dc and ac magnetic susceptibility reveal that, in comparison to the analogous compound without f electrons, LaFePO, the superconducting transition temperatures Tc are only moderately affected by the lanthanide 4f-electron magnetic moments. These results indicate that either the exchange interaction that leads to magnetic pair breaking is extremely weak or the superconducting state is unconventional. Measurements of the upper-critical-field curves and the magnetic susceptibility also reveal that the magnetic-field-induced suppression of the superconducting state is not strongly correlated with spin polarization of the magnetic lanthanide ions.
Source-reported materials — not catalogue approval
| Formula | Reported Tc (K) | Pressure (GPa) | Type |
|---|---|---|---|
| PrFePO Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 4.4 | Pressure not reported | unknown |
| NdFePO Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 4.4 | Pressure not reported | unknown |
| LaFePO Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 6.6 | Pressure not reported | unknown |
| LaFePO Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 14 | Pressure not reported | onset |
| Sr2ScO3FePO Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 17 | Pressure not reported | unknown |
| SmFePO Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 3.1 | Pressure not reported | unknown |
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