Stability of A–B phase boundary in a constriction

نویسندگان

  • Janne Viljas
  • Erkki Thuneberg
چکیده

We report on a Ginzburg–Landau calculation of the stability of a boundary between A and B phases of superfluid He in a two-dimensional constriction. In the macroscopic limit the stability follows a well-known relation, which depends on the surface tension sAB of the A–B boundary. In the narrow-constriction limit the surface tension is not well defined, but the interface is always stable, and a weak link between the A and B phases is obtained. r 2003 Elsevier Science B.V. All rights reserved. PACS: 67.57.Np; 67.57.Bc; 67.57.Fg

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تاریخ انتشار 2003