Half-quantum vortices

Квантованные вихри и турбулентность

Автор(и)

  • V.P. Mineev Service de Physique Statistique, Magnétisme et Supraconductivité, Institut Nanosciences et Cryogénie UMR-E CEA/UJF-Grenoble1, F-38054 Grenoble, France

DOI:

https://doi.org/10.1063/1.4823487%20

Ключові слова:

superfluid, vortice, superconductivity.

Анотація

Unlike to superfluid 4He the superfluid 3He-A support the existence of vortices with half-quantum of circulation as well as single quantum vortices. The singular single quanta vortices as well as nonsingular vortices with 2 quanta of circulation have been revealed in rotating 3He-A. However, the half-quantum vortices in open geometry always possess an extra energy due to spin-orbit coupling leading to formation of domain wall at distances larger than dipole length ~10–3 cm from the vortex axis. Fortunately the same magnetic dipole–dipole interaction does not prevent the existence of half-quantum vortices in the polar phase of superfluid 3He recently discovered in peculiar porous media “nematically ordered” aerogel. Here we discuss this exotic possibility. The discoveries of half-quantum vortices in triplet pairing superconductor Sr2RuO4 as well in the exciton–polariton condensates are the other parts of the story about half-quantum vortices also described in the paper.

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Опубліковано

2013-08-15

Як цитувати

(1)
Mineev, V. Half-Quantum Vortices: Квантованные вихри и турбулентность. Fiz. Nizk. Temp. 2013, 39, 1056-1062.

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