Stability of half quantum vortex in rotating superfluid 3He-A between parallel plates

2008/10/17 by T. Kawakami, Y. Tsutsumi, K. Machida · 1 citation
Physics and Astronomy · #cond-mat.supr-con

paper · pdf · doi:10.1103/physrevb.79.092506

published as Phys. Rev. B 79, 092506 (2009) · 5 pages, 4 figures

arxiv created 2008/10/17 · arxiv updated 2009/12/01

Abstract

We have found the precise stability region of the half quantum vortex (HQV) for superfluid ³He A phase confined in parallel plates with a narrow gap under rotation. Standard Ginzburg-Landau free energy, which is well established, is solved to locate the stability region spanned by temperature T and rotation speed (/Omega). This /Omega-T stability region is wide enough to check it experimentally in available experimental setup. The detailed order parameter structure of HQV characterized by A₁ core is given to facilitate the physical reasons of its stability over other vortices or textures.

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