Temperature and power dependence of Shapiro and Fiske step widths in Nb/InAs/Nb Josephson junctions
Peter Baars, Andreas Richter, Ulrich Merkt
DOI 10.1103/PhysRevB.67.224501 · Physical Review B
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Abstract
We present experimental investigations on the ac Josephson effect in Nb/InAs/Nb Josephson junctions. We find oscillatory behavior of both Shapiro and Fiske step widths as a function of irradiated power and, furthermore, oscillations of Shapiro step widths with temperature. The measured temperature and power dependencies of Shapiro and Fiske step widths are well described by adapted resistively and capacitively shunted junction models accounting for excess currents and a nonuniform current distribution, respectively.
Source-reported materials — not catalogue approval
| Formula | Reported Tc (K) | Pressure (GPa) | Type |
|---|---|---|---|
| Nb 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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