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Phys. Rev. B 66, 140506 (2002) [4 pages]

Calculation of the phase field of a vortex pair on the surface of a multiply connected substrate

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Toshiaki Obata and Minoru Kubota
The Institute for Solid State Physics, University of Tokyo, 5-1-5 Kashiwano-ha, Kashiwa, Chiba 277-8581, Japan

Rapid Communication Received 14 June 2002; published 23 October 2002

The vortex pair phase field is calculated, through a solution of the Laplace equation, for a superfluid film adsorbed on the surface of a model three-dimensioanally connected porous medium. A number of different vortex-antivortex pair configurations are considered as functions of the porosity or an aspect ratio of the model porous structure. The calculated results give the energy of a pair for motion of the vortex cores around a pore or a solid rod as well as for the string configuration corresponding to a linear separation of the vortex pair through the porous medium.


©2002 The American Physical Society

URL: http://link.aps.org/doi/10.1103/PhysRevB.66.140506
DOI: 10.1103/PhysRevB.66.140506
PACS: 67.40.-w, 03.75.Fi, 05.30.Jp

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