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Josephson Effect in Coherent Roton Aggregates

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      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.

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      Journal
      05 June 2013
      1306.1221
      10.1134/S0021364013200095

      http://arxiv.org/licenses/nonexclusive-distrib/1.0/

      Custom metadata
      JETP Letters, Vol. 98, p. 378 (2013)
      2 pages
      cond-mat.other cond-mat.supr-con

      Condensed matter

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