Static vacancies in antiferromagnetic La2CuO4 and superconducting La2−xSrxCuO4
Gang Xiao, Marta Z. Cieplak, C. L. Chien
DOI 10.1103/PhysRevB.42.240 · Physical Review B
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Abstract
The effect of static vacancies that eliminate local Cu2+ spins has been studied in both the antiferromagnetic and superconducting state of La2−xSrxCuO4. Static vacancies induce uncompensated magnetic moments and suppress the three-dimensional Néel state much less effectively than mobile vacancies. Analysis of magnetic susceptibility provides accurately the Cu2+ magnetic moment (∼1μB), which is insensitive to Sr doping, indicating that the d state of Cu2+ remains highly localized upon the introduction of mobile vacancy.
Source-reported materials — not catalogue approval
| Formula | Reported Tc (K) | Pressure (GPa) | Type |
|---|---|---|---|
| La1.85Sr0.15CuO4 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 38 | Pressure not reported | onset |
| La1.85Sr0.15Cu1-yZnyO4 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | — | Pressure not reported | unknown |
| YBa2Cu3O7 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 90 | Pressure not reported | unknown |
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