Josephson Effect in Coherent Roton Aggregates
arXiv:1306.1221 · doi:10.1134/S0021364013200095
Abstract
A microwave electromagnetic field can excite a coherent roton aggregate in liquid helium around a dielectric resonator. We show that multiple coherent aggregates are excited simultaneously and predict a Josephson effect between them. The superfluid velocity acts as a "voltage across the weak link" in superconducting Josephson junctions. A comparison with existing experimental data is made.
2 pages