Annihilation of vortex lines in rotating superfluid

V. Ruutu, J. Ruohio, M. Krusius, E. Sonin, Wen Xu, B. Plaçais

Research output: Contribution to journalArticlepeer-review

12 Scopus citations

Abstract

In decelerating rotation, vortex lines annihilate in single-vortex events at the annihilation threshold where their number (Formula presented) is equal to or exceeds the equilibrium value (Formula presented). A surplus (Formula presented) may be stabilized by an energy barrier, which during deceleration vanishes in an instability. We find the barrier to depend on container misalignment in (Formula presented) and on the orbital texture in the container corners in (Formula presented). Measurements of the instability yield the circulation quantum of the vortex which is found to be consistent with the present identification of vortex structures in (Formula presented).

Original languageEnglish
Pages (from-to)14089-14092
Number of pages4
JournalPhysical Review B - Condensed Matter and Materials Physics
Volume56
Issue number21
DOIs
StatePublished - 1997
Externally publishedYes

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