Direct observation of the nonaxisymmetric vortex in superfluid B3

Y. Kondo; J. S. Korhonen; M. Krusius; V. V. Dmitriev; Y. M. Mukharsky; E. B. Sonin; G. E. Volovik

doi:10.1103/PhysRevLett.67.81

Direct observation of the nonaxisymmetric vortex in superfluid B3

Y. Kondo^*
, J. S. Korhonen
, M. Krusius
, V. V. Dmitriev
, Y. M. Mukharsky
, E. B. Sonin
, G. E. Volovik

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

69 Scopus citations

Abstract

We present experimental proof that in rotating B3 the vortex-core transition temperature TV separates axisymmetric vortices above TV from vortices with spontaneously broken axial symmetry below TV. The nonaxisymmetry is observed in the presence of coherent spin precession as a new soft Goldstone mode, manifested as oscillations and spiral twisting of the core anisotropy axis. These are driven by the precessing spin via spin-orbit coupling and lead to magnetic relaxation from viscous losses, which depend on vortex pinning.

Original language	English
Pages (from-to)	81-84
Number of pages	4
Journal	Physical Review Letters
Volume	67
Issue number	1
DOIs	https://doi.org/10.1103/PhysRevLett.67.81
State	Published - 1991
Externally published	Yes

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10.1103/PhysRevLett.67.81

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abstract = "We present experimental proof that in rotating B3 the vortex-core transition temperature TV separates axisymmetric vortices above TV from vortices with spontaneously broken axial symmetry below TV. The nonaxisymmetry is observed in the presence of coherent spin precession as a new soft Goldstone mode, manifested as oscillations and spiral twisting of the core anisotropy axis. These are driven by the precessing spin via spin-orbit coupling and lead to magnetic relaxation from viscous losses, which depend on vortex pinning.",

author = "Y. Kondo and Korhonen, \{J. S.\} and M. Krusius and Dmitriev, \{V. V.\} and Mukharsky, \{Y. M.\} and Sonin, \{E. B.\} and Volovik, \{G. E.\}",

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doi = "10.1103/PhysRevLett.67.81",

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AU - Kondo, Y.

AU - Korhonen, J. S.

AU - Krusius, M.

AU - Dmitriev, V. V.

AU - Mukharsky, Y. M.

AU - Sonin, E. B.

AU - Volovik, G. E.

PY - 1991

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N2 - We present experimental proof that in rotating B3 the vortex-core transition temperature TV separates axisymmetric vortices above TV from vortices with spontaneously broken axial symmetry below TV. The nonaxisymmetry is observed in the presence of coherent spin precession as a new soft Goldstone mode, manifested as oscillations and spiral twisting of the core anisotropy axis. These are driven by the precessing spin via spin-orbit coupling and lead to magnetic relaxation from viscous losses, which depend on vortex pinning.

AB - We present experimental proof that in rotating B3 the vortex-core transition temperature TV separates axisymmetric vortices above TV from vortices with spontaneously broken axial symmetry below TV. The nonaxisymmetry is observed in the presence of coherent spin precession as a new soft Goldstone mode, manifested as oscillations and spiral twisting of the core anisotropy axis. These are driven by the precessing spin via spin-orbit coupling and lead to magnetic relaxation from viscous losses, which depend on vortex pinning.

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Direct observation of the nonaxisymmetric vortex in superfluid B3

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