Subharmonic Energy-Gap Structure and a Josephson-Radiation-Enhanced Gap in Dayem Bridges
- 20 August 1973
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review Letters
- Vol. 31 (8), 524-527
- https://doi.org/10.1103/physrevlett.31.524
Abstract
Superconducting thin-film microbridges are found to have subharmonic energy-gap structure in their characteristics at voltages of , which on the application of microwaves develop sidebands at . The structure is explained on the basis of pair breaking by the harmonics of the Josephson radiation, both directly and via the normal electrons. An enhancement of the energy gap apparently induced by the Josephson radiation is observed in the subharmonic structure.
Keywords
This publication has 4 references indexed in Scilit:
- Normal-State Resistance as the Determining Parameter in the Behavior of Dayem Bridges with Sinusoidal Current-Phase RelationsPhysical Review Letters, 1971
- Subharmonic Structure in Superconducting TunnelingPhysical Review B, 1970
- Excess Currents in Superconducting Tunnel JunctionsPhysical Review B, 1968
- Behavior of Thin-Film Superconducting Bridges in a Microwave FieldPhysical Review B, 1967