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Critical Velocity of Vortex Nucleation in Rotating Superfluid 3He-A | | V.M.H. Ruutu
; J. Kopu
; M. Krusius
; "U. Parts
; B. Placais
; E.V. Thuneberg
; W. Xu
; | | Date: |
29 Aug 1997 | | Journal: | Phys. Rev. Lett. 79, 5058 (1997) | | Subject: | Soft Condensed Matter | cond-mat.soft | | Abstract: | We have measured the critical velocity v_c at which 3He-A in a rotating cylinder becomes unstable against the formation of quantized vortex lines with continuous (singularity-free) core structure. We find that v_c is distributed between a maximum and minimum limit, which we ascribe to a dependence on the texture of the orbital angular momentum l(r) in the cylinder. Slow cool down through T_c in rotation yields l(r) textures for which the measured v_c’s are in good agreement with the calculated instability of the expected l texture. | | Source: | arXiv, cond-mat/9708226 | | Services: | Forum | Review | PDF | Favorites | |
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