Muon-spin-rotation measurement of magnetic field penetration and flux pinning in superconducting EuBa2Cu3Ox
D. W. Cooke, R. L. Hutson, R. S. Kwok, M. Maez, H. Rempp, M. E. Schillaci, J. L. Smith, J. O. Willis, R. L. Lichti, K. C. B. Chan, C. Boekema, S. P. Weathersby, J. Oostens
DOI 10.1103/PhysRevB.39.2748 · Physical Review B
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Abstract
Muon-spin-rotation measurements have been used to determine the magnetic field penetration depth λ as a function of temperature T in superconducting, sintered EuBa2Cu3Ox (x≈7). The extrapolated value at 0 K, λ(0), is 1700 Å. The temperature dependence of λ(T) in the interval 3.5 K to Tc is well described by the phenomenological relation λ(T)=λ(0)[1−(TTc)4]−12. For T<Tc, approximately 85% of the muons stop within the superconducting grains, whereas ≈ 15% reside in normal regions, perhaps at grain boundaries. At T=3.5 K the field-cooled superconductor has expelled only 2.3% of the applied magnetic field, indicating strong flux pinning in the material.
Source-reported materials — not catalogue approval
| Formula | Reported Tc (K) | Pressure (GPa) | Type |
|---|---|---|---|
| EuBa2Cu3Ox Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 95 | Pressure not reported | onset |
| EuBa2Cu3Ox Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 93 | Pressure not reported | unknown |
| EuBa2Cu3Ox Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 97 | Pressure not reported | unknown |
| YBa2Cu3O Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | — | Pressure not reported | unknown |
| La1.85Sr0.15CuO4 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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