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arXiv · 0810.3065

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

T. Kawakami·Y. Tsutsumi·K. Machida
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Abstract

We have found the precise stability region of the half quantum vortex (HQV) for superfluid $^3$He 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 A$_1$ core is given to facilitate the physical reasons of its stability over other vortices or textures.

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T. Kawakami, Y. Tsutsumi, K. Machida. 2008-10-17. Stability of half quantum vortex in rotating superfluid 3He-A between parallel plates. https://doi.org/10.1103/physrevb.79.092506

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