Classification of the interlayer coupling in high-Tc cuprates from low-field magnetization studies
N. E. Hussey, J. R. Cooper, R. A. Doyle, C. T. Lin, W. Y. Liang, D. C. Sinclair, G. Balakrishnan, D. McK. Paul, A. Revcolevschi
DOI 10.1103/PhysRevB.53.6752 · Physical Review B
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Abstract
Low-field magnetization M(H) measurements are reported for single crystals of various high-Tc cuprates with different anisotropies (γ=λc/λab, where λc and λab are the c-axis and ab-plane penetration depths). For YBa2Cu3O7 (γ≊5) and La1.89Sr0.11CuO4 (γ≊12), qualitatively similar M(H) behavior is observed when the magnetic field is applied both perpendicular (H∥c) and parallel (H∥ab) to the CuO2 planes, consistent with a description of these compounds as anisotropic three-dimensional superconductors. Tl2Ba2CuO6+δ (γ≊25) and Bi2Sr2CaCu2O (γ≊250), on the other hand, show significant differences in M(H) with H∥ab which can be attributed to the presence of Josephson screening currents across the layers. These observations imply that the nature of the interlayer coupling is determined primarily by the ratio of the out-of-plane coherence length ξc to the interlayer spacing s. © 1996 The American Physical Society.
Source-reported materials — not catalogue approval
| Formula | Reported Tc (K) | Pressure (GPa) | Type |
|---|---|---|---|
| Bi2Sr2CaCu2O8 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 89 | Pressure not reported | onset |
| Tl2Ba2CuO6 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 82 | Pressure not reported | onset |
| Tl2Ba2CuO6 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 65 | Pressure not reported | onset |
| La1.89Sr0.11CuO4 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 27 | Pressure not reported | onset |
| YBa2Cu3O7 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 92 | Pressure not reported | onset |
| NbSe2 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 7 | Pressure not reported | onset |
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