Физика Низких Температур: Том 47, Выпуск 11 (Ноябрь 2021), c. 989-993 ( к оглавлению , назад )
Influence of external microwave radiation on transport characteristics of superconducting MoRe–Si(W)–MoRe junctions
A. P. Shapovalov1,2, V. E. Shaternik1, O. O. Boliasova1,3, A. Yu. Suvorov1
1G. V. Kurdyumov Institute for Metal Physics of NAS of Ukraine Kyiv 03142, Ukraine
2Kyiv Academic University, Kyiv 03142, Ukraine
3The Dоnetsk Institute for Physics and Engineering named after O. O. Galkin of NAS of Ukraine Kyiv 03028, Ukraine
Received July 05, 2021, published online September 24, 2021
Specific response of superconducting devices to electromagnetic radiation is a core phenomenon for various applications, ranging from the voltage standard to single photon detectors. One of such effects is the stimulation of the superconductivity itself by microwaves. In the work, we have investigated the impact of external microwave irradiation on the stair-step current-voltage characteristics of MoRe–Si(W)–MoRe Josephson junctions arisen due to phase-slip events in the studied samples. At frequencies above a threshold value, we have observed the stimulation effect that can be explained by a non-equilibrium redistribution of filled energy levels in W clusters. In conclusion, we discuss the main tasks for future research.
Key words: Josephson hybrid junctions, one-dimensional transport, phase-slip events, microwave radiation.