Millimeter-wave complex-conductivity measurements of Bi-Ca-Sr-Cu-O superconducting thin films
W. Ho, P. J. Hood, W. F. Hall, P. Kobrin, A. B. Harker, R. E. DeWames
DOI 10.1103/PhysRevB.38.7029 · Physical Review B
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Abstract
The first experimental determination of the complex conductivity σ1(T) and σ2(T) of superconducting oriented polycrystalline thin films of Bi-Ca-Sr-Cu-O has been made at 60 GHz. A sharp rise in σ1 is observed below Tc. The microwave data can be fit by a model of superconducting grains nucleating in a normal conducting matrix. The penetration depth at 40 K deduced from this model is 1.3 μm.
Source-reported materials — not catalogue approval
| Formula | Reported Tc (K) | Pressure (GPa) | Type |
|---|---|---|---|
| BiCaSrCuO Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 68 | Pressure not reported | zero_resistance |
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