Antiferromagnetic and superconducting proximity effects in YBa2Cu3O7−δ/PrBa2Cu3O7−δ superlattices
D. Budelmann, J. Holmlund, J. Andreasson, H. Rodríguez, J. Bäckström, L. Börjesson, H. Adrian, U. Merkt, M. Rübhausen
DOI 10.1103/PhysRevB.67.140507 · Physical Review B
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Abstract
We investigate the interplay between the antiferromagnetic and superconducting order parameters in YBa2Cu3O7−δ/PrBa2Cu3O7−δ superlattices by inelastic light scattering. The ratio of superconducting to antiferromagnetic order is varied through different modulations 4/6, 4/9, and 4/12 of (Y/Pr)Ba2Cu3O7−δ layers. This allows us to identify the proximity effect of the superconducting order parameter into the antiferromagnetic barrier as signified, e.g., by the sharpening of the two-magnon excitation. This proximity effect as well as gap feature and phonon anomalies reveals the delicate interplay between superconducting and antiferromagnetic order parameters.
Source-reported materials — not catalogue approval
| Formula | Reported Tc (K) | Pressure (GPa) | Type |
|---|---|---|---|
| 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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