Microwave response of YBa2Cu3O7−δ-Ag-Al-Pb superconducting proximity junctions

M. A. M. Gijs; D. Scholten; Th. van Rooy; A. M. Gerrits

doi:10.1103/PhysRevB.41.11627

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Microwave response of YBa2Cu3O7−δ-Ag-Al-Pb superconducting proximity junctions

M. A. M. Gijs, D. Scholten, Th. van Rooy, A. M. Gerrits

DOI 10.1103/PhysRevB.41.11627 · Physical Review B

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Abstract

Thin-film YBa2Cu3O7−δ-Ag-Al-Pb proximity structures have been fabricated. The current-voltage characteristics are typically those of a superconductor-normal metal-superconductor (S-N-S) junction. Sharp Shapiro steps appear in a microwave field. The dependence of step height on microwave power can be interpreted in terms of the resistively shunted junction (RSJ) model, with a critical current Ic∝sinφ, where φ is the phase difference of the superconducting order parameter across the junction. It is the first time that this behavior is demonstrated for a S-N-S junction composed of both a classical and an oxide superconducting electrode.

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
Pb Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula.	7.2	Pressure not reported	unknown