Thursday, June 6, 2013

1306.1221 (Lev A. Melnikovsky)

Josephson Effect in Coherent Roton Aggregates    [PDF]

Lev A. Melnikovsky
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.
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