Muon spin rotation studies of SmFeAsO0.85 and NdFeAsO0.85 superconductors
Rustem Khasanov, Hubertus Luetkens, Alex Amato, Hans-Henning Klauss, Zhi-An Ren, Jie Yang, Wei Lu, Zhong-Xian Zhao
DOI 10.1103/PhysRevB.78.092506 · Physical Review B
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Abstract
Measurements of the in-plane magnetic-field penetration depth λab in Fe-based superconductors with the nominal composition SmFeAsO0.85 (Tc≃52 K) and NdFeAsO0.85 (Tc≃51 K) were carried out by means of muon-spin rotation. The absolute values of λab at T=0 were found to be 189(5) and 195(5) nm for Sm and Nd substituted samples, respectively. The analysis of the magnetic penetration depth data within the Uemura classification scheme, which considers the correlation between the superconducting transition temperature Tc and the effective Fermi temperature TF, reveals that both families of Fe-based superconductors (with and without fluorine) fall to the same class of unconventional superconductors.
Source-reported materials — not catalogue approval
| Formula | Reported Tc (K) | Pressure (GPa) | Type |
|---|---|---|---|
| SmFeAsO0.85 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 52 | Pressure not reported | unknown |
| NdFeAsO0.85 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 51 | Pressure not reported | unknown |
| LaO1-xFxFeAs Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 26 | Pressure not reported | unknown |
| SmO0.82F0.18FeAs Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 45 | Pressure not reported | unknown |
| SmO0.85F0.15FeAs 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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