Microwave vortex dissipation of superconducting Nd-Ce-Cu-O epitaxial films in high magnetic fields
N.-C. Yeh, U. Kriplani, W. Jiang, D. S. Reed, D. M. Strayer, J. B. Barner, B. D. Hunt, M. C. Foote, R. P. Vasquez, A. Gupta, A. Kussmaul
DOI 10.1103/PhysRevB.48.9861 · Physical Review B
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Abstract
The microwave vortex dissipation of superconducting Nd1.85Ce0.15CuOx epitaxial films is investigated by use of a sapphire dielectric-ring resonator in the whispering gallery modes, and in dc magnetic fields ranging from 0 to 25 kG. By extending the Coffey-Clem model to the thin-film and finite-grain-size limit, we infer important material parameters, including the irreversibility line, vortex pinning potential, pinning force constant and viscosity, through a direct least-squares fit to the microwave-absorption data.
Source-reported materials — not catalogue approval
| Formula | Reported Tc (K) | Pressure (GPa) | Type |
|---|---|---|---|
| Nd1.85Ce0.15CuOx Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 21 | Pressure not reported | zero_resistance |
| 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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