Magnetic properties of the superconducting ‘‘superoxide’’ La2CuO4+δ
E. J. Ansaldo, J. H. Brewer, T. M. Riseman, J. E. Schirber, E. L. Venturini, B. Morosin, D. S. Ginley, B. Sternlieb
DOI 10.1103/PhysRevB.40.2555 · Physical Review B
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Abstract
The magnetic properties of La2CuO4+δ (δ≤0.13) have been determined by means of muon-spin rotation and relaxation in transverse and zero external fields. A fraction fSC=0.6 of the sample was found to be superconducting with Tc=35(1) K and extrapolated penetration depth λ(0)=4200 Å (powder average). The other phase, 40% of the sample volume, displayed static magnetic ordering identical to that of oxygenated La2CuO4. The T dependence of λ is similar to that for samples of the La2−xSrxCuO4 family.
Source-reported materials — not catalogue approval
| Formula | Reported Tc (K) | Pressure (GPa) | Type |
|---|---|---|---|
| La2CuO4+δ Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 35 | Pressure not reported | unknown |
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