Vortex Core Transitions in Superfluid 3He in Uniaxially Anisotropic Aerogel

被引：0
作者：
K. Aoyama
R. Ikeda
机构：
[1] Kyoto University,Department of Physics, Graduate School of Science
来源：
Journal of Low Temperature Physics | 2010年 / 158卷
关键词：
Helium-3; Superfluid; Aerogel; Vortex;
D O I：
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学科分类号：
摘要：
Vortex core transitions (VCTs) in the superfluid phases of liquid 3He in uniaxially stretched and compressed aerogels are theoretically investigated. Uniaxial deformation imposed on the aerogel alters superfluid pairing symmetries in aerogels and the axial and polar pairing states are favored. In this study, we examine whether the effects of the uniaxial anisotropy on the pairing symmetries are reflected in core states of a single vortex extending along the deformation axis. By numerically solving the Ginzburg-Landau equations, we find that in the compressed aerogel, the first order VCT appears at any pressure in the B-like phase, while in the stretched aerogel, the VCT in the B-like phase is lost. Further, the vortices in the A-like phase in the stretched aerogel, have a polar core state in place of the A-phase core of the nonsingular Mermin-Ho vortex.
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页码：404 / 409
页数：5
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