Imaging of electromagnetic resonances in a YBa2Cu3O7−δ bicrystal grain-boundary Josephson junction
T. Doderer, Y. M. Zhang, D. Winkler, R. Gross
DOI 10.1103/PhysRevB.52.93 · Physical Review B
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Abstract
We report on spatially resolved measurements of dynamic states of a high-critical-temperature superconductor Josephson junction. The experiments were performed with a YBa2Cu3O7−δ thin-film grain-boundary Josephson junction fabricated on an yttria-stabilized zirconia bicrystal substrate. We identified the excitation of one-dimensional self-resonant cavity modes (Fiske resonances) with a spatial resolution of about 1–3 μm using low-temperature scanning electron microscopy. Our imaging results with this Josephson junction are in fair agreement with results obtained with high-quality Nb/AlOx/Nb tunnel junctions having a uniform dielectric tunnel barrier.
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. | 90 | Pressure not reported | onset |
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