Nonlinear microwave absorption in ceramic superconducting Y-Ba-Cu-O
Sergio M. Rezende, Flavio M. de Aguiar
DOI 10.1103/PhysRevB.39.9715 · Physical Review B
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Abstract
Novel microwave measurements in ceramic YBa2Cu3O7−δ reveal that in the superconducting phase the absorption is highly nonlinear in the microwave power. At T=80 K the surface resistance increases with dc field at a rate of 0.0025 Ω/Oe, and with the microwave rf field at 0.07 Ω/Oe, resulting in an absorption that can be substantial in the absence of an applied dc field.
Source-reported materials — not catalogue approval
| Formula | Reported Tc (K) | Pressure (GPa) | Type |
|---|---|---|---|
| YBa2Cu3O7-δ Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 92 | Pressure not reported | onset |
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