Double-quantum vortex in superfluid He-3-A

Physics

Research output: Contribution to Journal/Magazine › Journal article › peer-review

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Double-quantum vortex in superfluid He-3-A. / Blaauwgeers, R.; Eltsov, V. B.; Krusius, M. et al.
In: Nature, Vol. 404, No. 6777, 30.03.2000, p. 471-473.

Research output: Contribution to Journal/Magazine › Journal article › peer-review

Harvard

Blaauwgeers, R, Eltsov, VB, Krusius, M, Ruohio, JJ, Schanen, R & Volovik, GE 2000, 'Double-quantum vortex in superfluid He-3-A', Nature, vol. 404, no. 6777, pp. 471-473. https://doi.org/10.1038/35006583

APA

Blaauwgeers, R., Eltsov, V. B., Krusius, M., Ruohio, J. J., Schanen, R., & Volovik, G. E. (2000). Double-quantum vortex in superfluid He-3-A. Nature, 404(6777), 471-473. https://doi.org/10.1038/35006583

Vancouver

Blaauwgeers R, Eltsov VB, Krusius M, Ruohio JJ, Schanen R, Volovik GE. Double-quantum vortex in superfluid He-3-A. Nature. 2000 Mar 30;404(6777):471-473. doi: 10.1038/35006583

Author

Blaauwgeers, R. ; Eltsov, V. B. ; Krusius, M. et al. / Double-quantum vortex in superfluid He-3-A. In: Nature. 2000 ; Vol. 404, No. 6777. pp. 471-473.

Bibtex

@article{ff9af196384b4a2da56ea84fdb409256,

title = "Double-quantum vortex in superfluid He-3-A",

abstract = "Linear defects are generic in continuous media(1). In quantum systems they appear as topological line defects which are associated with a circulating persistent current. In relativistic quantum field theories they are known as cosmic strings(2), in superconductors as quantized flux lines(3), and in superfluids(3,4) and low-density Bose-Einstein condensates(5) as quantized vortex lines. A conventional quantized vortex Line consists of a central core around which the phase of the order parameter winds by 2 pi n, while within the core the order parameter vanishes or is depleted from the bulk value. Usually vortices are singly quantized (that is, have n = 1). But it has been theoretically predicted that, in superfluid He-3-A, vortex lines are possible that have n = 2 and continuous structure, so that the orientation of the multicomponent order parameter changes smoothly throughout the vortex while the amplitude remains constant. Here we report direct proof, based on high-resolution nuclear magnetic resonance measurements, that the most common vortex line in He-3-A has n = 2. One vortex line after another is observed to form in a regular periodic process, similar to a phase-slip in the Josephson effect.",

keywords = "ROTATING HE-3-A, PHASE, VORTICES",

author = "R. Blaauwgeers and Eltsov, {V. B.} and M. Krusius and Ruohio, {J. J.} and Roch Schanen and Volovik, {G. E.}",

year = "2000",

month = mar,

day = "30",

doi = "10.1038/35006583",

language = "English",

volume = "404",

pages = "471--473",

journal = "Nature",

issn = "0028-0836",

publisher = "Nature Publishing Group",

number = "6777",

}

RIS

TY - JOUR

T1 - Double-quantum vortex in superfluid He-3-A

AU - Blaauwgeers, R.

AU - Eltsov, V. B.

AU - Krusius, M.

AU - Ruohio, J. J.

AU - Schanen, Roch

AU - Volovik, G. E.

PY - 2000/3/30

Y1 - 2000/3/30

N2 - Linear defects are generic in continuous media(1). In quantum systems they appear as topological line defects which are associated with a circulating persistent current. In relativistic quantum field theories they are known as cosmic strings(2), in superconductors as quantized flux lines(3), and in superfluids(3,4) and low-density Bose-Einstein condensates(5) as quantized vortex lines. A conventional quantized vortex Line consists of a central core around which the phase of the order parameter winds by 2 pi n, while within the core the order parameter vanishes or is depleted from the bulk value. Usually vortices are singly quantized (that is, have n = 1). But it has been theoretically predicted that, in superfluid He-3-A, vortex lines are possible that have n = 2 and continuous structure, so that the orientation of the multicomponent order parameter changes smoothly throughout the vortex while the amplitude remains constant. Here we report direct proof, based on high-resolution nuclear magnetic resonance measurements, that the most common vortex line in He-3-A has n = 2. One vortex line after another is observed to form in a regular periodic process, similar to a phase-slip in the Josephson effect.

AB - Linear defects are generic in continuous media(1). In quantum systems they appear as topological line defects which are associated with a circulating persistent current. In relativistic quantum field theories they are known as cosmic strings(2), in superconductors as quantized flux lines(3), and in superfluids(3,4) and low-density Bose-Einstein condensates(5) as quantized vortex lines. A conventional quantized vortex Line consists of a central core around which the phase of the order parameter winds by 2 pi n, while within the core the order parameter vanishes or is depleted from the bulk value. Usually vortices are singly quantized (that is, have n = 1). But it has been theoretically predicted that, in superfluid He-3-A, vortex lines are possible that have n = 2 and continuous structure, so that the orientation of the multicomponent order parameter changes smoothly throughout the vortex while the amplitude remains constant. Here we report direct proof, based on high-resolution nuclear magnetic resonance measurements, that the most common vortex line in He-3-A has n = 2. One vortex line after another is observed to form in a regular periodic process, similar to a phase-slip in the Josephson effect.

KW - ROTATING HE-3-A

KW - PHASE

KW - VORTICES

U2 - 10.1038/35006583

DO - 10.1038/35006583

M3 - Journal article

VL - 404

SP - 471

EP - 473

JO - Nature

JF - Nature

SN - 0028-0836

IS - 6777

ER -

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