Effects of field cooling on low-field microwave absorption in copper oxide superconductors
Taha Mzoughi, Horacio A. Farach, Eduardo Quagliata, Manuel A. Mesa, Charles P. Poole, Jr., Richard Creswick
DOI 10.1103/PhysRevB.46.1130 · Physical Review B
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Abstract
Nonresonant direct absorption of unmodulated microwaves by both the thallium and yttrium copper oxide superconductors exhibits pronounced temperature- and/or field-history dependence. Zero-field-cooled samples exhibited an absorption minimum at zero field, and this minimum was displaced from zero for field-cooled samples. Rotating the samples relative to the field direction caused the minimum to shift in an approximately cosinusoidal manner.
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. | — | Pressure not reported | unknown |
| Tl2Ba2CaCu2O8 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | — | Pressure not reported | unknown |
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